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MS132-T circuit breakers for transformer protection

0.10 to 25 A – with thermal and electromagnetic protection 02

Circuit breakers for transformer protection are electro-mechanical protection devices specially
designed to protect control transformers on the primary side. They allow fuseless protection
against overload and short-circuit, saving space and cost and ensuring a quick reaction under
short-circuit condition by switching off the transformer within milliseconds. The short-circuit
current setting is fixed to 20 times the operating current to handle the high inrush current gen-
erated by transformers. The device allows manual connection and disconnection of
the transformer from the mains.
2CDC241009V0017 MS132-T is a 45 mm (width) compact and powerful range for transformer protection up to
12.5 kW (400 V) / 25 A. This type has also a clear and reliable indication of fault in a separate win-

temperature compensation, trip-free mechanism and a rotary handle with a clear switch posi-
MS132-10T dow in the event of short-circuit tripping. Further features are the built-in disconnect function,
tion indication. The handle is lockable to protect against unauthorized changes. Auxiliary con-
tacts, signaling contacts, undervoltage releases, shunt trips, power in-feed blocks are available
as accessory. These are suitable throughout the MS116/MS132/MS165-range.
Moreover ABB offers special accessories for fast single phase setup.
Setting range Short-circuit Rated Type Order code Weight
breaking capacity instantaneous (1 pce)
Ics short-circuit
2CDC241002F0014 A 0.10 … 0.16 kA A 3.2 MS132-0.16T 1SAM340000R1001 kg
at 400 V AC
current setting li
0.215
100
0.16 … 0.25
0.25 … 0.40 100 5 8 MS132-0.25T 1SAM340000R1002 0.215
100
MS132-0.4T
1SAM340000R1003
0.215
MS132-25T 0.40 … 0.63 100 12.6 MS132-0.63T 1SAM340000R1004 0.215
0.63 … 1.00 100 20 MS132-1.0T 1SAM340000R1005 0.215
1.00 … 1.60 100 32 MS132-1.6T 1SAM340000R1006 0.265
1.60 … 2.50 100 50 MS132-2.5T 1SAM340000R1007 0.265
2.50 … 4.00 100 80 MS132-4.0T 1SAM340000R1008 0.265
4.00 … 6.30 100 126 MS132-6.3T 1SAM340000R1009 0.265
6.30 … 10.0 100 200 MS132-10T 1SAM340000R1010 0.265
8.00 … 12.0 100 240 MS132-12T 1SAM340000R1012 0.310
10.0 … 16.0 100 320 MS132-16T 1SAM340000R1011 0.310
16.0 … 20.0 100 400 MS132-20T 1SAM340000R1013 0.310
20.0 … 25.0 50 500 MS132-25T 1SAM340000R1014 0.310

81.05 3.19"
81.25 3.2" 72.2 2.84"
72.4 2.85" 1.5 0.06" 5.5 0.22" 43.3 0.22"
1.5 0.06" 5.5 0.22" 43.5 1.71"

0.1"
0.1" 3.85" 1.7 2.95" 1.77"
3.54" 1.7 2.95" 1.38" 1.77" 75 1.38" 35 45
90 75 35 45" 97.8
2CDC131062C0201 - Rev. B
14 0.55" 14 0.55" 14 0.55" 14 0.55"
45 1.77" 45 1.77"
MS132T ≤ 10 A MS132T ≥ 12 A
Main dimensions mm, inches