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 6A 10K C-TRIP
Datasheet
9In Stock
Min.: 1
Mult.: 1
5SJ4 Circuit Breaker Miniature 6 A 277 VAC 60 VDC 1 Pole Lever - 25 C + 55 C Non-Illuminated
Siemens Circuit Breakers MCB 5SJ4 1P 277V 6A 10K D-TRIP
Datasheet
4In Stock
Min.: 1
Mult.: 1
5SJ4 Circuit Breaker Miniature 6 A 277 VAC 60 VDC 1 Pole Lever - 25 C + 55 C Non-Illuminated
Siemens Circuit Breakers MCB 5SJ4 1P 240V 8A SAME PH 14K C-TRIP
Datasheet
5In Stock
Min.: 1
Mult.: 1
5SJ4 Circuit Breaker Miniature 8 A 240 VAC 60 VDC 1 Pole Lever - 25 C + 55 C Non-Illuminated
Siemens Circuit Breakers MCB 5SJ4 1P 240V 8A 14K C-TRIP
Datasheet
10In Stock
Min.: 1
Mult.: 1
5SJ4 Circuit Breaker Miniature 8 A 240 VAC 60 VDC 1 Pole Lever - 25 C + 55 C Non-Illuminated
Siemens Circuit Breakers MCB 5SJ4 1P 277V 8A 10K C-TRIP
Datasheet
5In Stock
Min.: 1
Mult.: 1
5SJ4 Circuit Breaker Miniature 8 A 277 VAC 60 VDC 1 Pole Lever - 25 C + 55 C Non-Illuminated
Siemens Circuit Breakers MCB 5SJ4 1P 240V 10A SAME PH 14K B-TRIP
Datasheet
7In Stock
Min.: 1
Mult.: 1
5SJ4 Circuit Breaker Miniature 10 A 240 VAC 60 VDC 1 Pole Lever - 25 C + 55 C Non-Illuminated
Siemens Circuit Breakers MCB 5SJ4 1P 240V 10A 14K C-TRIP
Datasheet
17In Stock
Min.: 1
Mult.: 1
5SJ4 Circuit Breaker Miniature 10 A 240 VAC 60 VDC 1 Pole Lever - 25 C + 55 C Non-Illuminated
Siemens Circuit Breakers MCB 5SJ4 1P 277V 10A 10K C-TRIP
Datasheet
12In Stock
Min.: 1
Mult.: 1
5SJ4 Circuit Breaker Miniature 10 A 277 VAC 60 VDC 1 Pole Lever - 25 C + 55 C Non-Illuminated
Siemens Circuit Breakers MCB 5SJ4 1P 240V 10A SAME PH 14K D-TRIP
Datasheet
6In Stock
Min.: 1
Mult.: 1
5SJ4 Circuit Breaker Miniature 10 A 240 VAC 60 VDC 1 Pole Lever - 25 C + 55 C Non-Illuminated
Siemens Circuit Breakers MCB 5SJ4 1P 240V 10A 14K D-TRIP
Datasheet
28In Stock
Min.: 1
Mult.: 1
5SJ4 Circuit Breaker Miniature 10 A 240 VAC 60 VDC 1 Pole Lever - 25 C + 55 C Non-Illuminated
Siemens Circuit Breakers MCB 5SJ4 1P 277V 10A 10K D-TRIP
Datasheet
1In Stock
Min.: 1
Mult.: 1
Circuit Breaker Miniature 10 A 277 VAC 60 VDC 1 Pole Lever - 25 C + 55 C Non-Illuminated
Siemens Circuit Breakers MCB 5SJ4 1P 240V 5A SAME PH 14K C-TRIP
Datasheet
27In Stock
Min.: 1
Mult.: 1
5SJ4 Circuit Breaker Miniature 5 A 240 VAC 60 VDC 1 Pole Lever - 25 C + 55 C Non-Illuminated
Siemens Circuit Breakers MCB 1P 240V 5A 14K C-TRIP
Datasheet
9In Stock
Min.: 1
Mult.: 1
5SJ4 Circuit Breaker Miniature 5 A 240 VAC 60 VDC 1 Pole Lever - 25 C + 55 C Non-Illuminated
Siemens Circuit Breakers MCB 5SJ4 1P 277V 5A 10K C-TRIP
Datasheet
6In Stock
Min.: 1
Mult.: 1
5SJ4 Circuit Breaker Miniature 5 A 277 VAC 60 VDC 1 Pole Lever - 25 C + 55 C Non-Illuminated
Siemens Circuit Breakers MCB 5SJ4 1P 240V 5A SAME PH 14K D-TRIP
Datasheet
17In Stock
Min.: 1
Mult.: 1
5SJ4 Circuit Breaker Miniature 5 A 240 VAC 60 VDC 1 Pole Lever - 25 C + 55 C Non-Illuminated
Siemens Circuit Breakers MCB 5SJ4 1P 277V 5A 10K D-TRIP
Datasheet
5In Stock
Min.: 1
Mult.: 1
Circuit Breaker Miniature 5 A 277 VAC 60 VDC 1 Pole Lever - 25 C + 55 C Non-Illuminated
Siemens Circuit Breakers MCB 5SJ4 1P 240V 13A SAME PH 14K C-TRIP
Datasheet
5In Stock
Min.: 1
Mult.: 1
5SJ4 Circuit Breaker Miniature 13 A 240 VAC 60 VDC 1 Pole Lever - 25 C + 55 C Non-Illuminated
Siemens Circuit Breakers MCB 5SJ4 1P 277V 13A 10K C-TRIP
Datasheet
5In Stock
Min.: 1
Mult.: 1
Circuit Breaker Miniature 13 A 277 VAC 60 VDC 1 Pole Lever - 25 C + 55 C Non-Illuminated
Siemens Circuit Breakers MCB 5SJ4 1P 277V 0.3A 10K C-TRIP
Datasheet
1In Stock
Min.: 1
Mult.: 1
Circuit Breaker Miniature 300 mA 277 VAC 60 VDC 1 Pole Lever - 25 C + 55 C Non-Illuminated
Siemens Circuit Breakers MCB 5SJ4 1P 240V 1.6A SAME PH 14K C-TRIP
Datasheet
7In Stock
Min.: 1
Mult.: 1
5SJ4 Circuit Breaker Miniature 1.6 A 240 VAC 60 VDC 1 Pole Lever - 25 C + 55 C Non-Illuminated
Siemens Circuit Breakers MCB 5SJ4 1P 240V 16A SAME PH 14K C-TRIP
Datasheet
8In Stock
Min.: 1
Mult.: 1
5SJ4 Circuit Breaker Miniature 16 A 240 VAC 60 VDC 1 Pole Lever - 25 C + 55 C Non-Illuminated
Siemens Circuit Breakers MCB 5SJ4 1P 240V 16A 14K C-TRIP
Datasheet
7In Stock
Min.: 1
Mult.: 1
5SJ4 Circuit Breaker Miniature 16 A 240 VAC 60 VDC 1 Pole Lever - 25 C + 55 C Non-Illuminated
Siemens Circuit Breakers MCB 5SJ4 1P 277V 16A 10K C-TRIP
Datasheet
3In Stock
Min.: 1
Mult.: 1
Circuit Breaker Miniature 16 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 C-TRIP
Datasheet
8In Stock
Min.: 1
Mult.: 1
5SJ4 Circuit Breaker Miniature 15 A 240 VAC 60 VDC 1 Pole Lever - 25 C + 55 C Non-Illuminated
Siemens Circuit Breakers MCB 5SJ4 1P 240V 15A 14K C-TRIP
Datasheet
1In Stock
4Expected 13/04/2026
Min.: 1
Mult.: 1
5SJ4 Circuit Breaker Miniature 15 A 240 VAC 60 VDC 1 Pole Lever - 25 C + 55 C Non-Illuminated