MOTOR PROTECTIVE

CIRCUIT BREAKERS
MOTOR PROTECTIVE CIRCUIT BREAKERS MS
Nach IEC 60947-4-1, DIN EN 60947-4-1, VDE 0660-102; UL 508

Our MS motor protective circuit breakers (MPCBs) offer optimal protection for motors and other loads up to 32 A, due
to its high breaking capacity with strongly limited current. The new products of our MS series are IE3 compliant and
therefore perfectly suitable for the safe operation of IE3 motors. They are equipped with main switch and disconnec-
ting functions; 14 ranges are covering nominal rated currents from 0.1 up to 32 A. The MPCBs are self protected up to
6.3 A at 400 V. The ranges > 6.3 A provide a short circuit withstand rating of 6 kA. The MPCBs are temperature compen-
sated; the actuating current of the short circuit trip is 15 x lu.

MAX. RATED OPERATING POWER OPERATING

RATED (kW/AC 3) CURRENT WEIGHT
ITEM NO. CURRENT SHORT PU
220 V 380 V 440 V 500 V 660 V G / EACH
A CIRCUIT
230 V 400 V 690 V TRIP (A)
240 V 415 V

MS with overload and short circuit tripping

Phase failure sensitivity
MS-016 0,1 – 0,16 0,02 0,06 2,4 252 1
MS-025 0,16 – 0,25 0,06 0,06 0,06 0,09 3,75 252 1
MS-04 0,25 – 0,4 0,06 0,09 0,12 0,12 0,18 6 252 1
MS-063 0,4 – 0,63 0,09 0,12 0,18 0,25 0,25 9,45 252 1
MS-1 0,63 – 1 0,09 ... 0,12 0,18 ... 0,25 0,25 0,37 0,37 ... 0,55 15 252 1
MS-1.6 1 – 1,6 0,18 ... 0,25 0,37 ... 0,55 0,37 ... 0,55 0,55 ... 0,8 0,75 ... 1,1 24 252 1
MS-2.5 1,6 – 2,5 0,37 0,75 ... 1,1 0,75 ... 1,1 1,1 1,5 37,5 252 1
MS-4 2,5 – 4 0,55 ... 0,8 1,1 ... 1,5 1,5 1,5 ... 2,2 2,2 ... 3 60 252 1
MS-6.3 4 – 6,3 1,1 ... 1,5 2,2 ... 2,5 2,2 ... 3 3 4 94,5 252 1
MS-10 6,3 – 10 1,5 ... 2,5 3 ... 4 4 ... 5 4 ... 5,5 5,5 ...7,5 150 252 1
MS-16 10 – 16 3 ... 4 5 ... 7,5 5,5 ... 9 7,5 ... 9 11 240 252 1
MS-20 16 – 20 5,5 9 11 11 ...12,5 15 300 252 1
MS-25 20 – 25 5,5 ... 7,5 11 ... 12,5 12,5 15 18,5 375 252 1
MS-32 25 – 32 9 15 15 18,5 480 252 1

RATED ULTIMATE SHORT-CIRCUIT MAX. BACK-UP FUSE, IF I cc > I cu

BREAKING CAPACITY I cu
ITEM NO.
230 V 400 V 500 V 690 V 230 V 400 V 500 V 690 V

MS-016 50 50 50 50
MS-025 50 50 50 50
MS-04 50 50 50 50 No back-up fuse
MS-063 50 50 50 50 required

MS-1 50 50 50 50
MS-1.6 50 50 50 50
MS-2.5 50 50 3 2,5 25 20
MS-4 50 50 3 2,5 35 25
MS-6.3 50 50 3 2,5 50 35
MS-10 50 6 3 2,5 80 50 35
MS-16 10 6 2,5 2 80 80 63 35
MS-20 10 6 2,5 2 80 80 63 50
MS-25 10 6 2,5 2 80 80 63 50
MS-32 10 6 2,5 2 80 80 63 50
MOTOR PROTECTIVE DEVICES
FOR VARIABLE SPEED FAN MOTORS

The MWC-10 is a multi-polar circuit breaker which allows a thermal contact, which is built into the motor (directly into
the coil), to be analysed. For example, if the motor is hindered due to dirt, the coil will heat up more than normal and the
thermal contact (NC contact) in the coil will break the circuit. The bimetal built into the circuit breaker recognizes the
opening of the thermal contact in the motor coil and, with the smallest motor rated current, switches off all poles com-
pletely within max. 40 s. However, this type of full motor protection neglects wiring protection. The connection from the
full motor protection to the fan is not protected. In order to protect this connection, a back-up fuse is needed which fits
the conductor cross section. This back-up fuse is usually installed in front of the full motor protection.

RATED WEIGHT
ITEM NO. CURRENT PU
G / EACH
(A)

Motor protective device for variable-speed fan motors

MWC-10 0,4-10 252 1

ACCESSORIES FOR MOTOR PROTECTIVE CIRCUIT BREAKERS MS

WEIGHT
ITEM NO. MODULES WIRING DIAGRAM CONTACTS PU
G / EACH

Auxiliary contact for side mounting

HM-20 ½M 2 NO 35 1

HM-11 ½M 1 NO + 1 NC 35 1

RATED WEIGHT
ITEM NO. PU
OPERATING VOLTAGE G / EACH

Shunt trip
for inside mounting with connecting cable (140 mm long)
AM-110 110 V 50 Hz 62 1

AM-230 220-240V 50 Hz 62 1

AM-400 380-415 V 50 Hz 62 1

Undervoltage trip
for inside mounting with connecting cable (140 mm long)
UM-110 110 V 50 Hz 62 1
UM-230 220-240 V 50 Hz 62 1
UM-400 380-415 V 50 Hz 62 1
Shunt trip with
rated impulse withstand voltage Uimp 6.000 V

RATED OPERATING RATED OPERATING WEIGHT

ITEM NO. CONTACTS PU
VOLTAGE Ue CURRENT Ie G / EACH

EHM-11 1 NO + 1 NC 230 / 400 / 500 V 3,5 / 2 / 1,5 A 15 1

ACCESSORIES FOR MOTOR PROTECTIVE CIRCUIT BREAKERS MS

MAX. PU
WEIGHT
DESCRIPTION BUSBAR LENGTH ITEM NO. G / EACH
CURRENT (A)

Busbars
for 2 MPCBs
63 90 mm SB.D02 37 10
without auxiliary contacts
for 3 MPCBs
63 136 mm SB.D03 55 10
without auxiliary contacts
for 4 MPCBs
63 180 mm SB.D04 75 10
without auxiliary contacts
for 2 MPCBs each with
1 auxiliary contact fitted 63 99 mm SB.D12 40 10
on the right side
for 3 MPCBs each with
1 auxiliary contact 63 153 mm SB.D13 65 10
fitted on the right side
for 4 MPCBs each with
1 auxiliary contact 63 207 mm SB.D14 90 10
fitted on the right side
for 5 MPCBs each with
1 auxiliary contact 63 261 mm SB.D15 115 10
fitted on the right side
for 2 MPCBs each with
63 108 mm SB.D22 45 10
2 auxiliary contacts
ffor 4 MPCBs each with
63 234 mm SB.D24 105 10
2 auxiliary contacts

Incoming terminal block

63 SB.DE1 30 10

Shroud
SB.DA1 5 10
INSULATED ENCLOSURES FOR MOTOR PROTECTIVE CIRCUIT BREAKERS

INSULATED ENCLOSURE IP55 INSULATED FLUSH MOUNTING

with integrated PE(N) ENCLOSURE IP55
terminal top and bottom
with integrated PE(N) terminal
each 2xM25 metric knock-outs

WEIGHT WEIGHT
ITEM NO. PU ITEM NO. PU
G / EACH G / EACH

M-G55 222 1 M-F55 150 1

ACCESSORIES FOR INSULATED ENCLOSURES M-G55 / M-F55

EMERGENCY-STOP BUTTON PADLOCKING FACILITY

latching, turn to release for up to three padlocks
red, on yellow surface

WEIGHT WEIGHT
ITEM NO. PU ITEM NO. PU
G / EACH G / EACH

M-PV 40 1 M-VS 95 1

INDICATOR LIGHT INDICATOR LIGHT

with glow bulb, with glow bulb,
nominal rated voltage 250 V nominal rated voltage 400 V

WEIGHT WEIGHT
COLOUR ITEM NO. PU COLOUR ITEM NO. PU
G / EACH G / EACH

green M-SLG2 175 25 green M-SLG3 175 25

Max. assembly of insulated enclosures

ITEM NO. MS HMS AM/UM/EHM M-PV/M-VS M-SLG

M-G55 1 2 1 1 1
M-F55 1 2 1 1 1
ABL SURSUM Albert-Büttner-Straße 11 Phone +49 (0) 9123 188-0 info@abl.de
Bayerische Elektrozubehör GmbH & Co. KG D-91207 Lauf / Pegnitz Fax +49 (0) 9123 188-188 www.abl.de