5SJ4 Miniature Circuit Breakers

Siemens 5SJ4 Miniature Circuit Breakers come in 1-, 2- or 3-pole versions with 0.3A to 63A rated current. These 70mm mounting depth devices are smaller than traditional molded-case circuit breakers and feature identical wire screw connections on the line and load sides. Siemens 5SJ4 provides DIN rail mounting, an ON and OFF/Trip visible indicator, and EN50274 touch protection.

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Qty. RoHS ECAD Model Series
Product
Type
Current Rating
Voltage Rating AC
Voltage Rating DC
Number of Poles
Actuator Type
Minimum Operating Temperature
Maximum Operating Temperature
Illuminated
Siemens Circuit Breakers MCB 5SJ4 1P 277V 15A 10K C-TRIP
Datasheet
2In Stock
Min.: 1
Mult.: 1
Circuit Breakers Miniature 15 A 277 VAC 60 VDC 1 Pole Lever - 25 C + 55 C Non-Illuminated
Siemens Circuit Breakers MCB 5SJ4 1P 240V 15A SAME PH 14K D-TRIP
Datasheet
5In Stock
Min.: 1
Mult.: 1
5SJ4 Circuit Breakers Miniature 15 A 240 VAC 60 VDC 1 Pole Lever - 25 C + 55 C Non-Illuminated
Siemens Circuit Breakers MCB 5SJ4 1P 240V 20A SAME PH 14K B-TRIP
Datasheet
5In Stock
Min.: 1
Mult.: 1
5SJ4 Circuit Breakers Miniature 20 A 240 VAC 60 VDC 1 Pole Lever - 25 C + 55 C Non-Illuminated
Siemens Circuit Breakers MCB 5SJ4 1P 240V 20A SAME PH 14K C-TRIP
Datasheet
24In Stock
Min.: 1
Mult.: 1
5SJ4 Circuit Breakers Miniature 20 A 240 VAC 60 VDC 1 Pole Lever - 25 C + 55 C Non-Illuminated
Siemens Circuit Breakers MCB 5SJ4 1P 277V 20A 10K C-TRIP
Datasheet
8In Stock
Min.: 1
Mult.: 1
5SJ4 Circuit Breakers Miniature 20 A 277 VAC 60 VDC 1 Pole Lever - 25 C + 55 C Non-Illuminated
Siemens Circuit Breakers MCB 5SJ4 1P 277V 20A 10K D-TRIP
Datasheet
6In Stock
Min.: 1
Mult.: 1
5SJ4 Circuit Breakers Miniature 20 A 277 VAC 60 VDC 1 Pole Lever - 25 C + 55 C Non-Illuminated
Siemens Circuit Breakers MCB 5SJ4 1P 240V 25A 14K C-TRIP
Datasheet
4In Stock
Min.: 1
Mult.: 1
Circuit Breakers Miniature 25 A 240 VAC 60 VDC 1 Pole Lever - 25 C + 55 C Non-Illuminated
Siemens Circuit Breakers MCB 5SJ4 1P 277V 25A 10K C-TRIP
Datasheet
5In Stock
Min.: 1
Mult.: 1
Circuit Breakers Miniature 25 A 277 VAC 60 VDC 1 Pole Lever - 25 C + 55 C Non-Illuminated
Siemens Circuit Breakers MCB 5SJ4 1P 240V 30A 14K C-TRIP
Datasheet
3In Stock
Min.: 1
Mult.: 1
5SJ4 Circuit Breakers Miniature 30 A 240 VAC 60 VDC 1 Pole Lever - 25 C + 55 C Non-Illuminated
Siemens Circuit Breakers MCB 5SJ4 1P 277V 30A 10K C-TRIP
Datasheet
4In Stock
Min.: 1
Mult.: 1
5SJ4 Circuit Breakers Miniature 30 A 277 VAC 60 VDC 1 Pole Lever - 25 C + 55 C Non-Illuminated
Siemens Circuit Breakers MCB 5SJ4 1P 277V 32A 10K D-TRIP
Datasheet
1In Stock
Min.: 1
Mult.: 1
Circuit Breakers Miniature 32 A 277 VAC 60 VDC 1 Pole Lever - 25 C + 55 C Non-Illuminated
Siemens Circuit Breakers MCB 5SJ4 1P 240V 40A SAME PH 14K C-TRIP
Datasheet
12In Stock
Min.: 1
Mult.: 1
5SJ4 Circuit Breakers Miniature 40 A 240 VAC 60 VDC 1 Pole Lever - 25 C + 55 C Non-Illuminated
Siemens Circuit Breakers MCB 5SJ4 1P 277V 40A 10K C-TRIP
Datasheet
5In Stock
Min.: 1
Mult.: 1
5SJ4 Circuit Breakers Miniature 40 A 277 VAC 60 VDC 1 Pole Lever - 25 C + 55 C Non-Illuminated
Siemens Circuit Breakers MCB 5SJ4 2P 480/277 1A 10K C-TRIP
Datasheet
4In Stock
Min.: 1
Mult.: 1
5SJ4 Circuit Breakers Miniature 1 A 277 VAC, 480 VAC 60 VDC 2 Pole Lever - 25 C + 55 C Non-Illuminated
Siemens Circuit Breakers MCB 5SJ4 2P 480/277 1A 10K D-TRIP
Datasheet
3In Stock
Min.: 1
Mult.: 1
5SJ4 Circuit Breakers Miniature 1 A 277 VAC, 480 VAC 60 VDC 2 Pole Lever - 25 C + 55 C Non-Illuminated
Siemens Circuit Breakers MCB 5SJ4 2P 240V 2A 14K C-TRIP
Datasheet
6In Stock
Min.: 1
Mult.: 1
5SJ4 Circuit Breakers Miniature 2 A 240 VAC 60 VDC 2 Pole Lever - 25 C + 55 C Non-Illuminated
Siemens Circuit Breakers MCB 5SJ4 2P 480/277 2A 10K D-TRIP
Datasheet
5In Stock
Min.: 1
Mult.: 1
5SJ4 Circuit Breakers Miniature 2 A 277 VAC, 480 VAC 60 VDC 2 Pole Lever - 25 C + 55 C Non-Illuminated
Siemens Circuit Breakers MCB 5SJ4 2P 240V 3A 14K C-TRIP
Datasheet
5In Stock
Min.: 1
Mult.: 1
5SJ4 Circuit Breakers Miniature 3 A 240 VAC 60 VDC 2 Pole Lever - 25 C + 55 C Non-Illuminated
Siemens Circuit Breakers MCB 5SJ4 2P 480/277 3A 10K D-TRIP
Datasheet
3In Stock
Min.: 1
Mult.: 1
5SJ4 Circuit Breakers Miniature 3 A 277 VAC, 480 VAC 60 VDC 2 Pole Lever - 25 C + 55 C Non-Illuminated
Siemens Circuit Breakers MCB 5SJ4 2P 240V 4A 14K C-TRIP
Datasheet
8In Stock
Min.: 1
Mult.: 1
5SJ4 Circuit Breakers Miniature 4 A 240 VAC 60 VDC 2 Pole Lever - 25 C + 55 C Non-Illuminated
Siemens Circuit Breakers MCB 5SJ4 2P 480/277 4A 10K C-TRIP
Datasheet
10In Stock
Min.: 1
Mult.: 1
5SJ4 Circuit Breakers Miniature 4 A 277 VAC, 480 VAC 60 VDC 2 Pole Lever - 25 C + 55 C Non-Illuminated
Siemens Circuit Breakers MCB 5SJ4 2P 480/277 4A 10K D-TRIP
Datasheet
5In Stock
Min.: 1
Mult.: 1
5SJ4 Circuit Breakers Miniature 4 A 277 VAC, 480 VAC 60 VDC 2 Pole Lever - 25 C + 55 C Non-Illuminated
Siemens Circuit Breakers MCB 5SJ4 2P 240V 0.5A 14K C-TRIP
Datasheet
4In Stock
Min.: 1
Mult.: 1
5SJ4 Circuit Breakers Miniature 500 mA 240 VAC 60 VDC 2 Pole Lever - 25 C + 55 C Non-Illuminated
Siemens Circuit Breakers MCB 5SJ4 2P 240V 6A 14K C-TRIP
Datasheet
6In Stock
Min.: 1
Mult.: 1
5SJ4 Circuit Breakers Miniature 6 A 240 VAC 60 VDC 2 Pole Lever - 25 C + 55 C Non-Illuminated
Siemens Circuit Breakers MCB 5SJ4 2P 480/277 6A 10K C-TRIP
Datasheet
1In Stock
5Expected 21-08-2026
Min.: 1
Mult.: 1
5SJ4 Circuit Breakers Miniature 6 A 277 VAC, 480 VAC 60 VDC 2 Pole Lever - 25 C + 55 C Non-Illuminated