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Tertiary circuit breakers from 6 kA

Tertiary circuit breakers, also known as miniature circuit breakers (MCBs) or final distribution circuit breakers, are designed for overcurrent and short-circuit protection in low-voltage electrical installations. These devices typically feature a rated short-circuit breaking capacity of 6 kA according to IEC 60898-1 standards, with rated curren...

Tertiary circuit breakers, also known as miniature circuit breakers (MCBs) or final distribution circuit breakers, are designed for overcurrent and short-circuit protection in low-voltage electrical installations. These devices typically feature a rated short-circuit breaking capacity of 6 kA according to IEC 60898-1 standards, with rated currents ranging from 0.5 A to 63 A. They are available in single-pole (1P), double-pole (2P), triple-pole (3P), and four-pole (4P) configurations, with voltage ratings up to 400 V AC. The trip curves (B, C, D) define their instantaneous tripping characteristics, making them suitable for different load types such as resistive, inductive, or motor loads. These circuit breakers are modular devices with a width of 17.5 mm per pole, designed for DIN rail mounting in distribution boards. They incorporate thermal-magnetic trip mechanisms for reliable protection against overloads and short circuits.

Tertiary circuit breakers are primarily installed in final distribution boards, consumer units, and sub-distribution panels in residential, commercial, and light industrial buildings. They protect lighting circuits, socket outlets, HVAC systems, and small motor loads. In industrial settings, they are used in control panels and automation cabinets for protecting auxiliary circuits, control transformers, and PLC power supplies. Their compact design allows for high-density installation in limited spaces, making them ideal for modular electrical systems.

Key subcategories include single-pole MCBs (e.g., code S05-1P-6kA), double-pole MCBs (S05-2P-6kA), triple-pole MCBs (S05-3P-6kA), and four-pole MCBs (S05-4P-6kA). The article code typically follows the pattern: S05-[number of poles]-6kA-[rated current], where rated current values range from 0.5 A to 63 A. Common rated currents include 6 A, 10 A, 16 A, 20 A, 25 A, 32 A, and 40 A. These circuit breakers are available with different trip curves: B-curve for resistive loads, C-curve for general loads, and D-curve for motor and transformer loads.

Our platform offers real-time pricing and express worldwide shipping for all tertiary circuit breaker models. Each product includes detailed technical documentation with breaking capacity curves, I²t characteristics, and dimensional drawings. Our team of specialized electrical engineers provides personalized technical support for selecting the appropriate trip curve and rated current based on your specific load requirements and installation conditions. We ensure fast delivery to any global destination, minimizing downtime in your projects.

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Manufacturer Code Reference Catalog Number Description Delivery Price

5SY6515-7

5SY6515-7

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Miniature circuit breaker 230 V 6kA, 1+N-pole C, 1.6 A, D=70 mm

Circuit breaker, 70mm, accessory, 6kA, curve C, 1 pole+N, 1.5A. Cancelations and returns limited. Consult conditions.

 		3 View Availability View Price

5SY6613-6

5SY6613-6

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Miniature circuit breaker 400 V 6kA, 3+N-pole B, 13 A, D=70 mm

INTERR. SELECT PROTECTION. 400V 6KA,3+N-POLES B, 13A, P=70MM. Cancelations and returns limited. Consult conditions.

 		3 View Availability View Price

5SL4213-8

5SL4213-8

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Miniature circuit breaker 400 V 10kA, 2-pole, D, 13A

Circuit breaker, 70mm, accessory 5SL4, 10kA, D-curve, 2-pole, 13A. Cancelations and returns limited. Consult conditions.

 		3 View Availability View Price

5SL4404-6

5SL4404-6

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Miniature circuit breaker 400 V 10kA, 4-pole, B, 4A

Circuit breaker, 70mm, accessory 5SL4, 10kA, curve B, 4 poles, 4A. Cancelations and returns limited. Consult conditions.

 		3 View Availability View Price

5SY6125-7

5SY6125-7

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Miniature circuit breaker 230/400 V 6kA, 1-pole, C, 25A, D=70 mm

Circuit breaker, 70mm, accessory, 6kA, curve C, 1 pole, 25A. Cancelations and returns limited. Consult conditions.

 		3 View Availability View Price

5SL4213-7

5SL4213-7

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Miniature circuit breaker 400 V 10kA, 2-pole, C, 13A

Circuit breaker, 70mm, accessory 5SL4, 10kA, curve C, 2 poles, 13A. Cancelations and returns limited. Consult conditions.

 		3 View Availability View Price

5SJ4310-8HG42

5SJ4310-8HG42

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Circuit breaker 10kA, 3-pole, D, 10 A according to UL 489-480Y/277V

AUTOMATIC MAGNETOTHERMIC 10 KA, 3 POLES, D, 10A ACCORDING TO UL 489 - 480Y/277V. Manufactured to order. Non-Cancelable Non-Returnable.

 		0 Stock Available View Price

5SY6208-7

5SY6208-7

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Miniature circuit breaker 400 V 6kA, 2-pole, C, 8A, D=70 mm

Circuit breaker, 70mm, accessory, 6kA, curve C, 2 poles, 8A. Cancelations and returns limited. Consult conditions.

 		3 View Availability View Price

5SJ4310-8HG41

5SJ4310-8HG41

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Miniature circuit breaker 240 V 14kA, 3-pole, D, 10A, D=70 mm according to UL 489

INTERR. SELECT PROTECTION. 240V 14KA, 3POLOS, D, 10A, P=70MM ACCORDING TO UL 489. Manufactured to order. Non-Cancelable Non-Returnable.

 		3 View Availability View Price

5SL4613-8

5SL4613-8

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Miniature circuit breaker 400 V 10kA, 3+N-pole, D, 13A

Circuit breaker, 70mm, accessory 5SL4, 10kA, D-curve, 3 poles+N, 13A. Cancelations and returns limited. Consult conditions.

 		3 View Availability View Price

5SL4613-6

5SL4613-6

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Miniature circuit breaker 400 V 10kA, 3+N-pole, B, 13A

Circuit breaker, 70mm, accessory 5SL4, 10kA, curve B, 3 poles+N, 13A. Cancelations and returns limited. Consult conditions.

 		3 View Availability View Price

5SL4613-7

5SL4613-7

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Miniature circuit breaker 400 V 10kA, 3+N-pole, C, 13A

Circuit breaker, 70mm, accessory 5SL4, 10kA, curve C, 3 poles+N, 13A. Cancelations and returns limited. Consult conditions.

 		3 View Availability View Price

5SY6304-7

5SY6304-7

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Miniature circuit breaker 400 V 6kA, 3-pole, C, 4A, D=70 mm

Circuit breaker, 70mm, accessory, 6kA, curve C, 3 poles, 4A. Cancelations and returns limited. Consult conditions.

 		3 View Availability View Price

5SY6363-7

5SY6363-7

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Miniature circuit breaker 400 V 6kA, 3-pole, C, 63 A, D=70 mm

Circuit breaker, 70mm, accessory, 6kA, curve C, 3 poles, 63A. Cancelations and returns limited. Consult conditions.

 		3 View Availability View Price

5SY6363-6

5SY6363-6

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Miniature circuit breaker 400 V 6kA, 3-pole, B, 63A, D=70 mm

INTERR. SELECT PROTECTION. 400V 6KA, 3POLOS, B,63A, P=70MM. Cancelations and returns limited. Consult conditions.

 		3 View Availability View Price

5SJ4108-8HG40

5SJ4108-8HG40

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Miniature circuit breaker 240 V 14kA, 1-pole, D, 8A, D=70 mm according to UL 489, equal polarity

INTERR. SELECT PROTECTION. 240V 14KA, 1POLO, D, 8A, P=70MM ACCORDING TO UL 489, SAME POLARITY. Manufactured to order. Non-Cancelable Non-Returnable.

 		3 View Availability View Price

5SJ4108-8HG41

5SJ4108-8HG41

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Miniature circuit breaker 240 V 14kA, 1-pole, D, 8A, D=70 mm according to UL 489

INTERR. SELECT PROTECTION. 240V 14KA, 1polo, D, 8A, P=70MM ACCORDING TO UL 489. Manufactured to order. Non-Cancelable Non-Returnable.

 		3 View Availability View Price

5SJ4108-8HG42

5SJ4108-8HG42

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Circuit breaker 10kA, 1-pole, D, 8A according to UL 489-277V

AUTOMATIC MAGNETOTHERMIC 10 KA, 1 POLE, D, 8A ACCORDING TO UL 489 - 277 V. Manufactured to order without possibility of return or cancellation.

 		3 View Availability View Price

5SL4532-6

5SL4532-6

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Miniature circuit breaker 230 V 10kA, 1+N-pole, B, 32 A

Circuit breaker, 70mm, accessory 5SL4, 10kA, curve B, 1 pole+N, 32A. Cancelations and returns limited. Consult conditions.

 		3 View Availability View Price

5SL4532-7

5SL4532-7

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Miniature circuit breaker 230 V 10kA, 1+N-pole, C, 32 A

Circuit breaker, 70mm, accessory 5SL4, 10kA, curve C, 1 pole+N, 32A. Cancelations and returns limited. Consult conditions.

 		3 View Availability View Price

5SL4532-8

5SL4532-8

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Miniature circuit breaker 230 V 10kA, 1+N-pole, D, 32 A

Circuit breaker, 70mm, accessory 5SL4, 10kA, curve D, 1 pole+N, 32A. Cancelations and returns limited. Consult conditions.

 		3 View Availability View Price

5SJ4313-8HG42

5SJ4313-8HG42

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Circuit breaker 10kA, 3-pole, D, 13A according to UL 489-480Y/277V

AUTOMATIC MAGNETOTHERMIC 10 KA, 3 POLES, D, 13A ACCORDING TO UL 489 - 480Y/277V. Manufactured to order. Non-Cancelable Non-Returnable.

 		3 View Availability View Price

5SJ4313-8HG41

5SJ4313-8HG41

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Miniature circuit breaker 240 V 14kA, 3-pole, D, 13 A, D=70 mm according to UL 489

INTERR. SELECT PROTECTION. 240V 14KA, 3POLOS, D, 13A, P=70MM ACCORDING TO UL 489. Manufactured to order. Non-Cancelable Non-Returnable.

 		3 View Availability View Price

5SY6513-6

5SY6513-6

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Miniature circuit breaker 230 V 6kA, 1+N-pole B, 13 A, D=70 mm

INTERR. SELECT PROTECTION. 230V 6KA,1+N-POLES B, 13A, P=70MM. Cancelations and returns limited. Consult conditions.

 		3 View Availability View Price

5SL4302-7

5SL4302-7

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Miniature circuit breaker 400 V 10kA, 3-pole, C, 2A

Circuit breaker, 70mm, accessory 5SL4, 10kA, C curve, 3 poles, 2A. Cancelations and returns limited. Consult conditions.

 		3 View Availability View Price

5SL4563-8

5SL4563-8

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Miniature circuit breaker 230 V 10kA, 1+N-pole, D, 63 A

Circuit breaker, 70mm, accessory 5SL4, 10kA, curve D, 1 pole+N, 63A. Cancelations and returns limited. Consult conditions.

 		3 View Availability View Price

5SL4563-6

5SL4563-6

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Miniature circuit breaker 230 V 10kA, 1+N-pole, B, 63 A

Circuit breaker, 70mm, accessory 5SL4, 10kA, curve B, 1 pole+N, 63A. Cancelations and returns limited. Consult conditions.

 		3 View Availability View Price

5SL4113-8

5SL4113-8

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Miniature circuit breaker 230/400 V 10kA, 1-pole, D, 13A

Circuit breaker, 70mm, accessory 5SL4, 10kA, curve D, 1 pole, 13A. Cancelations and returns limited. Consult conditions.

 		3 View Availability View Price

5SL4113-6

5SL4113-6

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Miniature circuit breaker 230/400 V 10kA, 1-pole, B, 13A

Circuit breaker, 70mm, accessory 5SL4, 10kA, curve B, 1 pole, 13A. Cancelations and returns limited. Consult conditions.

 		3 View Availability View Price

5SJ4116-6HG40

5SJ4116-6HG40

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Miniature circuit breaker 240 V 14kA, 1-pole, B, 16A, D=70 mm according to UL 489, equal polarity

INTERR. SELECT PROTECTION. 240V 14KA, 1pole, B, 16A, P=70MM ACCORDING TO UL 489. Cancelations and returns limited. Consult conditions.

 		3 View Availability View Price

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