ADS7 starters fully comply with BSEN 60947-4-1, IEC 60947-4-1 and VDE 0660. ENCLOSURES - METALCLAD Attractively styled rust protected sheet steel finished in two tone grey stove enamel. Environmental protection IP54 to BSEN60529. Start and mushroom-headed stop/reset pushbuttons. Substantial earth terminal. Cable entries - metric knockouts. ENCLOSURES - MOULDED (11kW d.o.l. max) Tough polycarbonate in two-tone grey provides environmental protection IP65 to BSEN60529. Degree of protection to U.T.E.C20010 IP655 includes the impact rating. Start and mushroom-headed stop/reset pushbuttons, the latter being available with a latch off facility. Internal earth and neutral terminals. Cable entries - 20mm knockouts and M20 threaded knockouts. CONTACTORS Modern block type complying with BSEN 60947-4-1, IEC 60947-4-1 and VDE 0660. 5 x 10 6 mechanical and 0.25 x 106 electrical operations - AC3 duty. Provisions for fitting two additional auxiliary contacts either N/O or N/C. OVERLOAD RELAYS T.P. adjustable thermal pattern connected directly to the contactor provides three-phase protection to BSEN 60947-4-1. All are ambient temperature compensated between -5ºC to 40ºC. The relays are phase failure sensitive as defined in the standard. A changeover trip contact is provided and simple adjustment from HAND to AUTO-RESET is a standard feature. SWITCH-DISCONNECTORS T.P. interlocked stalled-motor switch-disconnectors complete with padlocking facility are available on metalclad d.o.l. starters. Isolators are type tested for on-load disconnection to BSEN 60947-3 Category AC-23 and provide means of isolation and switching for mechanical maintenance in accordance with the 16th Edition of the IEE Wiring Regulations. TERMINAL CAPACITIES (MAX) D.O.L. 11kW D.O.L. 15kW STAR-DELTA 15kW STAR-DELTA 30kW Main 2 x 4mm 2 2 x 16mm 2 Aux 2 x 2.5mm 2 2 x 2.5mm 2 OPTIONAL FITTINGS AND SPECIALS MEM’s versatile range of ADS7 starters has provision for various optional fitments on standard starters together with special starter arrangements. See page 36 for further details. M O T O R C O N T R O L G E A R A D S 7 A C C O N T A C T O R S T A R T E R S 2
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ADS7 starters fully comply with BSEN 60947-4-1, IEC 60947-4-1 and
VDE 0660.
ENCLOSURES - METALCLADAttractively styled rust protected sheet steel finished in two tone grey
stove enamel. Environmental protection IP54 to BSEN60529.
Start and mushroom-headed stop/reset pushbuttons.
Substantial earth terminal.
Cable entries - metric knockouts.
ENCLOSURES - MOULDED(11kW d.o.l. max)
Tough polycarbonate in two-tone grey provides environmental protection
IP65 to BSEN60529.
Degree of protection to U.T.E.C20010 IP655 includes the impact rating.
Start and mushroom-headed stop/reset pushbuttons, the latter being
available with a latch off facility.
Internal earth and neutral terminals. Cable entries - 20mm knockouts and
M20 threaded knockouts.
CONTACTORSModern block type complying with BSEN 60947-4-1, IEC 60947-4-1
and VDE 0660.
5 x 106 mechanical and 0.25 x 106 electrical operations - AC3 duty.
Provisions for fitting two additional auxiliary contacts either N/O or N/C.
OVERLOAD RELAYST.P. adjustable thermal pattern connected directly to the contactor provides
three-phase protection to BSEN 60947-4-1. All are ambient temperature
compensated between -5ºC to 40ºC. The relays are phase failure sensitive
as defined in the standard. A changeover trip contact is provided and
simple adjustment from HAND to AUTO-RESET is a standard feature.
SWITCH-DISCONNECTORST.P. interlocked stalled-motor switch-disconnectors complete with
padlocking facility are available on metalclad d.o.l. starters. Isolators are
type tested for on-load disconnection to BSEN 60947-3 Category AC-23
and provide means of isolation and switching for mechanical maintenance
in accordance with the 16th Edition of the IEE Wiring Regulations.
COIL PHASE TO NEUTRAL - remove connection Y and connect Neutral to a1F.
SEPARATE COIL SUPPLY - remove connections Y and Z and connect coil supply to a1F and 95.
COIL VOLTAGE - ensure correct voltage coil is fitted in phase to neutral and separate coil supply applications.
EXTERNAL INTERLOCK - except when using remote control remove connection W and connect interlock
between 34 and 96. When remote control is employed connect interlock in series with the remote control.
TO REVERSE DIRECTION OF ROTATION - interchange any two supply lines 1, 3 or 5.
SHORT CIRCUIT PROTECTION - maximum sizes of MEM back-up fuses together with appropriate mcb
ratings where applicable are tabulated on page 9.
LIMIT SWITCH STOP CONTROL:-
Forward limit - remove connection H and connect limit switch between 13 and 51.
Reverse limit - remove connection J and connect limit switch between 43 and 21.
ALARM CIRCUIT - at trip an alarm signal voltage equal to the coil supply voltage is available between 98 and
a1R.
CONTROL CIRCUIT FUSES:-Coil phase to neutral (one fuse) - remove connection Z and connect fuse between 1 and 95.
Coil phase to phase (two fuses) - remove connection Z and connect fuse between 1 and 95. Remove
connection Y and connect fuse between 3 and a1F.
NOTE: The voltage rating of the fuse(s) must be suitable for the control circuit voltage.
INCHING CONTROL - non-maintained in forward and/or reverse directions for use with roller-shutter doors
and similar applications.
INCHING CONTROL ON FORWARD - remove connection K.
INCHING CONTROL REVERSE - remove connection L.
13 43 13 43
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M O T O R C O N T R O L G E A RA D S 7 T Y P I C A L C I R C U I T D I A G R A M S
NOTES TO STARTER DIAGRAMS
COIL CONNECTIONSFor 380...415V Coils:- the starter is supplied with control circuit connected between L1 and L2.
For 220...240V Coils:- the starter is supplied with control circuit connected between L1 and N.
SEPARATE COIL SUPPLYPhase to Neutral applications:- remove connectors Z and Y, link a2F to N, and connect supply to 95 and N.
Phase to Phase applications:- remove connectors Z and Y and connect supply to a2F and 95.
COIL VOLTAGE - ensure correct voltage coils are fitted in phase to neutral and separate coil supply applications.
ALARM CIRCUIT - at trip an alarm signal voltage equal to the coil supply voltage is available between 98 and a2R.
EXTERNAL INTERLOCK - except when using remote control, remove connection W and connect interlock between 34 and 96. Whenremote control is employed connect interlock in series with the remote control.
Single Phase Motors - Special wiring diagram and overload relay required - consult our Specials Department.
CONTROL CIRCUIT FUSES
Coil Connected Phase to Neutral (1 fuse):- remove connectors Z and Y, link a2F to N, and connect fuse between 1 and 95.
Coil Connected Phase to Phase (2 fuses):- remove connector Z and connect fuse between 1 and 95. Remove connector Y and connectfuse between 3 and a2F.
NOTE - the voltage rating of the fuse(s) must be suitable for the control circuit voltage.
LIMIT SWITCH STOP CONTROLForward Limit:- remove connection H and connect limit switch between 33 and 61.
Reverse Limit:- remove connection J and connect limit switch between 43 and 21.
TO REVERSE DIRECTION OF ROTATION - interchange any two motor lines 2, 4 or 6.
INCHING CONTROL: non-maintained in forward and/or reverse directions for use with roller - shutter doors and similar applications.
INCHING CONTROL ON FORWARD: remove connection K.
INCHING CONTROL ON REVERSE: remove connection L.
SHORT CIRCUIT PROTECTION: maximum sizes of MEM back-up fuses together with appropriatemcb ratings where applicable are tabulated on page 9.
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A D S 7 T Y P I C A L C I R C U I T D I A G R A M S
STAR-DELTA 15KW MAX. METALCLAD
NOTES TO STARTER DIAGRAMS
Coil Phase to Neutral - remove connector Y and connect neutral to a2M.
Separate coil supply - remove connectors Y and Z connect supply to a2M and 95.
COIL VOLTAGE - ensure correct voltage coils are fitted in phase to neutral and separate coil supply applications.
CONTROL CIRCUIT FUSES - coil phase to neutral (one fuse) - remove connector Z and connect fuse between 1 and 95, coil phase tophase (two fuses) - remove connector Z and connect fuse between 1 and 95, remove connector Y and connect fuse between 3 and a2M.
NOTE:- The voltage rating of the fuses must be suitable for the control circuit voltage.
EXTERNAL INTERLOCK - except when using remote control remove connector W and connect interlock between 96 and 74.
When using remote control connect external interlock in series with remote 2 wire (switch) control.
TO REVERSE DIRECTION OF ROTATION - interchange A1 with C1 and A2 with C2.
At trip an alarm signal voltage equal to the control circuit voltage is available between 98 and a2M.
Star to Delta change over time - this starter is provided with automatic changeover from Star to Delta. The time in the Star positionmay be varied by means of the control knob on the timer unit, 1-50 sec, approximately.
Compressor unloading valves (Electric).Energised in Star type:-For 415V, connect A1 to 41, and connect valve to B1 & 42.
For 240V valve, connect A1 to 41, connect valve to 42 & Neutral.
Energised in Delta type:-For 415V valve, connect B2 to 63, connect valve to C2 & 64.
For 240V valve, connect B2 to 63 & connect valve to 64 & Neutral.
SHORT CIRCUIT PROTECTION: maximum sizes of MEM back-up fuses together with appropriate MCB ratings where applicable are tabulated on page 9.
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M O T O R C O N T R O L G E A RA D S 7 T Y P I C A L C I R C U I T D I A G R A M S
COIL CONNECTIONS
For 380...415V Coils:- the starter is supplied with control circuit connected between L1 and L2 with a control fuse in each phase.
For 220...240V Coils:- the starter is supplied with control circuit connected between L1 and N with one fuse connected in the phase circuit.
SEPARATE COIL SUPPLYPhase to Neutral applications (1 fuse):- remove connectors Z and X, link a2 to N via connector Y, and connect supply to F2 and N.
Phase to Phase applications (2 fuses):- remove connectors Z and X, link a2 to F1 and connect supply to F2 and 43.
NOTE - the voltage rating of the fuse(s) must be suitable for the control circuit voltage.
COIL VOLTAGE - ensure correct voltage coils are fitted in phase to neutral and separate coil supply applications.
EXTERNAL INTERLOCK - except when using remote control, remove connector W and connect interlock between 96 and 74. Whenusing remote control, connect external interlock in series with remote 2 wire (switch) control.
TO REVERSE DIRECTION OF ROTATION - interchange A1 with C1 and A2 with C2.
ALARM CIRCUIT - at trip an alarm signal voltage equal to the control circuit voltage is available between 98 and a2M.
STAR TO DELTA CHANGEOVER TIME - this starter is provided with automatic changeover from Star to Delta. The time in the Starposition may be varied by means of the control knob on the timer unit, 1 - 50 secs. approximately.
Compressor unloading valves (Electric).
Energised in Star type:- For 415V valve, connect A1 to 51, and connect valve to B1 & 52. For 240V valve, connect A1 to 51 and connectvalve to 52 & Neutral.
Energised in Delta type:- For 415V valve, connect valve to B2 & C2.
For 240V valve, connect valve to B2 and Neutral.
SHORT CIRCUIT PROTECTION:- maximum sizes of MEM back-up fuses together with appropriateMCB ratings where applicable are tabulated on page 9.
STAR-DELTA 30KW MAX. METALCLAD
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A D S 7 E N C L O S E D I N D U S T R I A L S T A R T E R S3 - P H A S E D . O . L . A N D S T A R - D E L T A ,T Y P E D S B A N D Y S B , 9 0 K W M A X , I P 5 5
MEM’s heavy duty industrial starters have been developed to increase
the range of enclosed starters up to 90kW.
The design profile and numerous optional features available have been
developed from experience of user requirements. Thus the starters will
satisfy most specifications and are designed for mounting above or below
busbar chambers to form part of a switchboard assembly if required.
This range complements the lower rated ADS7 motor starters listed on
page 4.
SPECIFICATIONMEM enclosed starters comply with BSEN 60947-4-1,
IEC 60947-4-1 and VDE 0660 and have provisions for TP
interlocked and switch disconnectors HRC main fuses. Start and
Stop pushbuttons, control circuit fuses, remote control terminal
block and overload relays are fitted as standard.
ENCLOSURESEnclosures are robust rust-protected sheet steel with fully
gasketed hinged covers having environmental protection of IP55
to BSEN 60529: 1992 and IEC 60529: 1976. Switch -
disconnector versions IP54 except to special order.
CONTACTORSModern block-type complying with BSEN 60947-4-1, IEC 60947-4-1 and
VDE 0660. Each having provision for accepting additional auxiliary
contacts.
OVERLOAD RELAYSThe starters are supplied with an appropriate ambient temperature
SWITCH-DISCONNECTORSThe interlocked stalled-motor complete with padlocking switch-
disconnectors facility are available with provisions for auxiliary poles.
They are type tested to BSEN 60947-3 Category AC23 and provide a
means of isolation and switching for mechanical maintenance in
accordance with the 16th Edition of the IEE wiring regulations.
HRC FUSESProvisions for S-type ASTA-certified HRC fuse links to BS 88 Part 2:
1975 and complying with IEC 60269 Parts 1 & 2 are available in
addition to the TP interlocked switch-disconnector.
OPERATING CONDITIONS-5ºC to +40ºC.
OPTIONAL FEATURES AVAILABLEMotor rated ammeter with suppressed scale to indicate starting peaks.
Low voltage control circuit transformer.
Isolator auxiliary poles for separate control circuit supply.
Pilot indicating lamps.
Hand/Off/Auto or Local/Off/Remote selector switch.
Higher ratings up to 200kW available on request.
SPECIALS - see page 36
Reversing starters.
Two-speed starters for dual or tapped-wound motors.
Stator and rotor starters.
Main/Standby starters.
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A D S 7 E N C L O S E D I N D U S T R I A L S T A R T E R S3 - P H A S E D . O . L . A N D S T A R - D E L T A ,T Y P E D S B A N D Y S B , 9 0 K W M A X , I P 5 5
ORDER REFERENCES
MAX. FLC, 400 ... 415V 3ph LIST NO. OF BASIC ENCLOSED STARTER LESS SWITCH - DISCONNECTORA MAXIMUM AND HRC FUSES ACCORDING TO COIL VOLTAGE, 50Hz.
kW hp OVERLOAD RELAY FITTED.CONTROL VOLTAGES OTHER THAN THOSE LISTED ARE
AVAILABLE TO SPECIAL ORDER.
230 ... 240V 400 ... 415V
D.O.L. starter
46 22 30 522DSB* 722DSB*
63 30 40 530DSB* 730DSB*
75 37 50 537DSB* 737DSB*
110 55 75 555DSB* 755DSB*
180 90 125 590DSB* 790DSB*
Star-delta starter
57 30 40 530YSB* 730YSB*
80 45 60 545YSB* 745YSB*
110 55 75 555YSB* 755YSB*
138 75 100 575YSB* 775YSB*
180 90 125 590YSB* 790YSB*
*Add suffix ‘A’ to List No. for starter with switch-disconnector ie. 722DSBAAdd suffix ‘H’ to List No. for starter with switch-disconnector-fuse including
HRC main fuses ie. 790YSBH
DIMENSIONS
STARTER TYPE H W D
D.O.L. starters22, 30 DSB 300 200 180
37 DSB 400 300 180
22, 30 DSBA, H 500 300 180
37 DSBA, H600 400 220
55, 90 DSB
55, 90 DSBA, H 700 400 220
Star-delta starters
30 YSB 400 300 180
30 YSBA, H400 400 180
45, 55, 75 YSB
45, 55, 75 YSBA600 400 220
45, 55 YSBH
75 YSBH, 90 YSB 700 500 220
90 YSBA, H 800 600 220
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M S U P U S H B U T T O N C O N T R O L U N I T S ( M O U L D E D I P 6 5 )
The MSU series of pushbutton control units has been designed to match
MEM’s ADS7 motor starter range. Simplicity, versatility and robust
construction have been successfully allied to attractive styling.
One, two and three button types are available in a variety of
configurations. 3-button types 23MSU and 23MSU/L are
supplied with a fitted front label reading FORWARD,
REVERSE, STOP. A separate loose label is provided for
situations requiring UP, DOWN, STOP.
21MSUML emergency stop units conform to clause 6.2.3 of
BS4163 - Workshop emergency stop systems (schools and
MSU DIMENSIONSSINGLE WAY CONTROL STATIONS INCORPORATING 22mm CONTROL DEVICES LIST NO.Mushroom head latch stop, key release
with 1-N/C contact 21MSULK
Two position key operated selector switch with
1-N/O contact labelled 0/1 (Key removable in
both positions) 21MSU2K
Two position key operated spring return to “off”
selector switch with 1-N/O and 1-N/C contact
labelled 0/1 (Key removable in off position) 21MSU2SK
SPARE SWITCH UNIT (NOT SUITABLE FOR 22mm DEVICES) LIST NO.
Complete replacement unit with
N/O and N/C contacts and fixing screw 21MSB
21 MSU21 MSU/L/M/ML
22 MSU22 MSU/L
23 MSU23 MSU/L
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C S U P U S H B U T T O N C O N T R O L U N I T S
CSU DIMENSIONS
The CSU range of surface mounting control stations are of robust
construction, ideally suited for heavy industrial applications and comply
with BSEN 60947-5-1 and IEC 60947-5-1.
Latched stop/reset units comply with BSEN 60947-5-5:1998,
IEC 60947-5-5:1998
They are available in general purpose enclosures to IP4X and dust
and hoseproof enclosures to IP65 with cast iron bases and front
plates. An earth terminal is provided and the stations are finished
in a grey stoved paint finish. Contacts are single pole double break,
the stop units being push to break and start units push to make.
PERFORMANCE RATINGSRated insulation voltage (Ui) = 660 V.a.c.
Rated impulse voltage (Uimp) = 6kV
Rated thermal current (Ith) = 6A
Rated operational current (Ie) - Start 3A 415V AC15
- Stop 6A 415V AC15
Short-circuit protection - HRC fuselink 32A maximum
(MEM 32SA2, 32SB3)
- MCB 16A maximum (MEM MCH116)
Ambient temperature -5˚C to +40˚C
Maximum terminal capacity 2 x 2.5mm2.
CABLE ENTRIESGeneral purpose 1 and 2 way:
1-20mm knockout top and bottom.
General purpose 3 way:
1-20mm knockout top, bottom and back.
Dust and hoseproof:
1-20mm tapped entry at bottom (Reverse box for top entry).
NO. OF DESCRIPTION LIST NO.BUTTONS1 STOP 1CSU
1 LATCHED STOP/RESET 1CSUL
1 STOP, large mushroom head 50mm dia. 1CSUM
1 LATCHED STOP/RESET (IP65) 1CSUWL
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L O C A L D I S C O N N E C T O R SLO C A L D I S C O N N E C T O R S S TA N D A R D D U T Y, T Y P E R D M P, 2 0 - 6 3 A , I P 6 5 , 2 - 8 P O L E S
NOMINAL OPERATIONAL OPERATIONAL RATED RATED CONDITIONAL MAX DEGREE OFUNIT CURRENT, Ie AND CURRENT, Ie AND SHORT TIME SHORT CIRCUIT TERMINAL PROTECTIONRATING POWER, 415V POWER, 660V WITHSTAND CURRENT CAPACITYIe CATEGORY: CATEGORY: CURRENT (PROSPECTIVE R.M.S. mm2
RMS FOR AMPS AT 415V AC, FUSED)AC21 AC23 AC21 AC23 1 SEC Icw kA FUSE RATING
20A 20A 5.5kW 20A 5.5kW 0.25kA 25 20A 1 x 4mm2 IP6550 16A 2 x 2.5mm2
25A 25A 7.5kW 25A 7.5kW 0.40kA 25 25A 1 x 6mm2 IP6550 20A 2 x 4mm2
40A 40A 15kW 40A 15kW 0.80kA 62 40A 1 x 10mm2 IP652 x 6mm2
63A 63A 22kW 63A 18.5kW 1.70kA 50 63A 1 x 16mm2 IP652 x 10mm2
Auxiliary contact rating as main poles.
DIMENSIONS (MM)
NOMINAL A B C C D E F G H RUNIT 2-4 POLE 6 POLE ISORATING, Ie 20 & 40A 20 & 40A THREAD
2-3 POLE 4-6 POLE 25 & 63A 25 & 63A
20 and 25A 90 90 71 98 30 79 63 30 4.5 2 x 2040 and 63A 176 125 85 119 36 146 112 68 5.5 2 x 25
1 x 16
ORDER REFERENCES
NOMINAL UNIT DOUBLE POLE TRIPLE POLE FOUR POLE FOUR POLE SIX POLE EIGHT POLERATING, Ie AND NEUTRAL AND NEUTRAL LIST NO. AND NEUTRAL AND NEUTRAL LIST NO.
LIST NO. LIST NO. LIST NO. LIST NO.20A 2021RDMP 2031RDMP 204RDMP 2041RDMP 2061RDMP -
NB:- Switches with additional poles are available on request.
TECHNICAL DATA
Complying with BSEN60947 and IEC 408 the RDMP range of rotary
cam switches are suitable for on load switching of general distribution a.c.
power circuits and infrequent duty motor isolation.
Grey, moulded thermoplastic enclosures provide protection to
IP65 making them suitable for most indoor and outdoor
environmental conditions.
These compact isolators are fitted with red/yellow operating handles
padlockable in the ‘OFF’ position with up to three padlocks.
Units supplied with an early break auxiliary contact are indicated by a
figure 1 in the list number e.g. 2021RDMP.
The enclosure design allows easy access for cabling. Solid neutral and
earth termination points are a standard feature.
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LO C A L D I S C O N N E C T O R S S TA N D A R D D U T Y, T Y P E R D M P, 2 0 - 6 3 A , I P 6 5 , 2 - 8 P O L E S
Complying with BSEN60947 and IEC 408 the PC2 range
of rotary cam isolating switches are suitable for on load
switching of general distribution A.C. power circuits and
infrequent duty motor isolation.
Grey, pressed steel enclosures provide protection to IP55.
These compact disconnectors are fitted with black
operating handles, padlockable in the ‘OFF’ position.
The enclosure design allows easy access for cabling by
removal of the switch interior.
Switches with additional poles are available on request.
2 pole and 4 pole units have removable neutral links
included for SPN (from 2P) or TPN (from 4P) conversions.
Earth terminals provided as standard.
NOMINAL UNIT DOUBLE POLE TRIPLE POLE FOUR POLE SIX POLERATING, Ie LIST NO. LIST NO. LIST NO. LIST NO.20A PC2G20 2 PC2G20 3 PC2G20 4 PC2G20 6
25A PC2G25 2 PC2G25 3 PC2G25 4 PC2G25 6
40A PC2G40 2 PC2G40 3 PC2G40 4 PC2G40 6
63A PC2G63 2 PC2G63 3 PC2G63 4 PC2G63 6
NOMINAL OPERATIONAL OPERATIONAL RATED RATED CONDITIONAL MAX DEGREE OFUNIT CURRENT, Ie AND CURRENT, Ie AND SHORT TIME SHORT CIRCUIT TERMINAL PROTECTIONRATING POWER, 415V 3ph POWER, 660V 3ph WITHSTAND CURRENT CAPACITYIe CATEGORY: CATEGORY: CURRENT (PROSPECTIVE R.M.S.
RMS FOR AMPS AT 415V AC, FUSED)AC21 AC23 AC21 AC23 1 SEC kA FUSE RATING
20A 20A 5.5kW 20A 5.5kW 0.25kA 25 20A 1 x 4mm2 IP5550 16A 2 x 2.5mm2
25A 25A 7.5kW 25A 7.5kW 0.40kA 25 25A 1 x 6mm2 IP5550 20A 2 x 4mm2
40A 40A 15kW 40A 15kW 0.80kA 62 40A 1 x 10mm2 IP552 x 6mm2
63A 63A 22kW 63A 18.5kW 1.70kA 50 63A 1 x 16mm2 IP552 x 10mm2
PC2G20,
PC2G25,
PC2G40
(2P-6P)
TECHNICAL DATA
ORDER REFERENCES
DIMENSIONS
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