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Industrial circuit breakers from 6 kA

Industrial circuit breakers from 6 kA form the backbone of electrical protection in industrial environments. These devices, commonly referred to as molded case circuit breakers (MCCBs) or miniature circuit breakers (MCBs) depending on the current rating, are designed to interrupt fault currents and protect downstream equipment from overloads and...

Industrial circuit breakers from 6 kA form the backbone of electrical protection in industrial environments. These devices, commonly referred to as molded case circuit breakers (MCCBs) or miniature circuit breakers (MCBs) depending on the current rating, are designed to interrupt fault currents and protect downstream equipment from overloads and short circuits. Key technical parameters include number of poles (1P, 2P, 3P, 4P), rated current (In) ranging from 6 A to 630 A, breaking capacity (Icu) from 6 kA up to 100 kA, and rated operational voltage (Ue) up to 690 V AC. They feature thermal-magnetic or electronic trip units, and are available in fixed or plug-in mounting configurations. Accessories such as shunt trips, undervoltage releases, and auxiliary contacts enhance functionality.

These circuit breakers are deployed in main distribution boards (MDBs), sub-distribution boards (SDBs), motor control centers (MCCs), and industrial automation panels. They protect transformers, motors, capacitors, and lighting circuits in sectors like manufacturing, oil and gas, water treatment, and renewable energy. Their robust design ensures reliable operation in harsh environments with ambient temperatures up to 70°C and high humidity.

Key subcategories include high-breaking capacity MCBs (up to 10 kA), MCCBs with electronic trip units (e.g., 3VA series from Siemens, NSX series from Schneider Electric), and air circuit breakers (ACBs) for higher currents. Main article codes often follow patterns like 3VA1xxx (Siemens) or NSX100F (Schneider), where the digits indicate frame size and breaking capacity. For example, NSX250H denotes a 250 A frame with high breaking capacity.

We offer real-time pricing, express worldwide shipping, and dedicated support from industrial automation engineers. Our multilingual portal provides technical datasheets, CAD drawings, and application notes for each product. Whether you need a single replacement or bulk procurement for a project, our team ensures fast delivery and expert guidance.

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Manufacturer Code Reference Catalog Number Description Delivery Price

5SY7301-7

5SY7301-7

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Miniature circuit breaker 400 V 15kA, 3-pole, C, 1A, D=70 mm

Accessable circuit breaker, 15kA, curve C, 3 poles, 1A. Cancelations and returns limited. Consult conditions.

 		3 View Availability View Price

5SY4425-5

5SY4425-5

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Miniature circuit breaker 400 V 10kA, 4-pole, A, 25A, D=70 mm

Circuit breaker, 70mm, accessory, 10kA, curve A, 4 poles, 25A. Manufactured to order. Non-Cancelable Non-Returnable.

 		3 View Availability View Price

5SY4315-8

5SY4315-8

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Miniature circuit breaker 400 V 10kA, 3-pole, D, 1.6A, D=70 mm

Circuit breaker, 70mm, accessory, 10kA, curve D, 3 poles, 1.5A. Cancelations and returns limited. Consult conditions.

 		3 View Availability View Price

5SY7114-8

5SY7114-8

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Miniature circuit breaker 230/400 V 15kA, 1-pole, D, 0.3 A, D=70 mm

Accessable circuit breaker, 15kA, curve D, 1 pole, 0.3A. Manufactured to order. Non-Cancelable Non-Returnable.

 		3 View Availability View Price

5SY7114-7

5SY7114-7

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Miniature circuit breaker 230/400 V 15kA, 1-pole, C, 0.3A, D=70 mm

Accessable circuit breaker, 15kA, curve C, 1 pole, 0.3A. Manufactured to order. Non-Cancelable Non-Returnable.

 		3 View Availability View Price

5SY7432-8

5SY7432-8

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Miniature circuit breaker 400 V 15kA, 4-pole, D, 32 A, D=70 mm

Accessable circuit breaker, 15kA, curve D, 4 poles, 32A. Cancelations and returns limited. Consult conditions.

 		3 View Availability View Price

5SY8116-7

5SY8116-7

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Circuit breaker 230/400 V D=70 mm 25 kA according to EN 60947-2, 1P, C16

Int aut acces 70mm 25kA 1polo C-16A. Cancelations and returns limited. Consult conditions.

 		3 View Availability View Price

5SY8650-7

5SY8650-7

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Miniature circuit breaker 400 V D=70 mm 25 kA according to EN 60947-2, 3P+N, C50

Int aut acces 70mm 25kA 3poles+N C-50A. Manufactured to order. Non-Cancelable Non-Returnable.

 		3 View Availability View Price

5SY8350-8

5SY8350-8

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Miniature circuit breaker 400 V D=70 mm 25 kA according to EN 60947-2, 3P, D50

Int aut acces 70mm 25kA 3poles D-50A. Cancelations and returns limited. Consult conditions.

 		3 View Availability View Price

5SY4525-7

5SY4525-7

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Miniature circuit breaker 230 V 10kA, 1+N-pole, C, 25A, D=70 mm

Circuit breaker, 70mm, accessable, 10kA, curve C, 1 pole+N, 25A. Cancelations and returns limited. Consult conditions.

 		3 View Availability View Price

5SY4525-5

5SY4525-5

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Miniature circuit breaker 230 V 10kA, 1+N-pole, A, 25A, D=70 mm

Circuit breaker, 70mm, accessable, 10kA, curve A, 1 pole+N, 25A. Manufactured to order. Non-Cancelable Non-Returnable.

 		3 View Availability View Price

5SY4525-8

5SY4525-8

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Miniature circuit breaker 230 V 10kA, 1+N-pole, D, 25A, D=70 mm

Circuit breaker, 70mm, accessory, 10kA, curve D, 1 pole+N, 25A. Cancelations and returns limited. Consult conditions.

 		3 View Availability View Price

5SY8308-8

5SY8308-8

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Miniature circuit breaker 400 V D=70 mm 25 kA according to EN 60947-2, 3P, D8

Int aut acces 70mm 25kA 3poles D-8A. Manufactured to order. Non-Cancelable Non-Returnable.

 		3 View Availability View Price

5SY4650-6

5SY4650-6

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Miniature circuit breaker 400 V 10kA, 3+N-pole, B, 50 A, D=70 mm

Circuit breaker, 70mm, accessable, 10kA, curve B, 3 poles+N, 50A. Manufactured to order. Non-Cancelable Non-Returnable.

 		3 View Availability View Price

5SY4650-7

5SY4650-7

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Miniature circuit breaker 400 V 10kA, 3+N-pole, C, 50 A, D=70 mm

Circuit breaker, 70mm, accessory, 10kA, curve C, 3 poles+N, 50A. Cancelations and returns limited. Consult conditions.

 		3 View Availability View Price

5SY4650-8

5SY4650-8

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Miniature circuit breaker 400 V 10kA, 3+N-pole, D, 50 A, D=70 mm

Circuit breaker, 70mm, accessable, 10kA, curve D, 3 poles+N, 50A. Cancelations and returns limited. Consult conditions.

 		3 View Availability View Price

5SY8206-8

5SY8206-8

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Miniature circuit breaker 400 V D=70 mm 25 kA according to EN 60947-2, 2P, D6

Int aut acces 70mm 25kA 2poles D-6A. Cancelations and returns limited. Consult conditions.

 		3 View Availability View Price

5SY8206-7

5SY8206-7

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Miniature circuit breaker 400 V D=70 mm 25 kA according to EN 60947-2, 2P, C6

Int aut acces 70mm 25kA 2poles C-6A. Cancelations and returns limited. Consult conditions.

 		3 View Availability View Price

5SP9450-7KC47

5SP9450-7KC47

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CIRCUIT BREAKER 400V 50KA ACC. IEC 947-2, T92 4-POLE, C, 50A

 		3 View Availability View Price

5SY7310-6

5SY7310-6

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Miniature circuit breaker 400 V 15kA, 3-pole, B, 10A, D=70 mm

Circuit breaker, 70mm, accessory, 15kA, curve B, 3 poles, 10A. Cancelations and returns limited. Consult conditions.

 		3 View Availability View Price

5SY7410-8

5SY7410-8

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Miniature circuit breaker 400 V 15kA, 4-pole, D, 10A, D=70 mm

Accessable circuit breaker, 15kA, curve D, 4 poles, 10A. Cancelations and returns limited. Consult conditions.

 		3 View Availability View Price

5SY7240-6

5SY7240-6

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Miniature circuit breaker 400 V 15kA, 2-pole, B, 40A, D=70 mm

Circuit breaker, 70mm, accessable, 15kA, curve B, 2 poles, 40A. Manufactured to order. Non-Cancelable Non-Returnable.

 		3 View Availability View Price

5SY7550-8

5SY7550-8

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Miniature circuit breaker 230 V 15kA, 1+N-pole, D, 50 A, D=70 mm

Accessable circuit breaker, 15kA, curve D, 1 pole+N, 50A. Manufactured to order. Non-Cancelable Non-Returnable.

 		3 View Availability View Price

5SY8632-8

5SY8632-8

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Miniature circuit breaker 400 V D=70 mm 25 kA according to EN 60947-2, 3P+N, D32

Int aut acces 70mm 25kA 3polos+N D-32A. Manufactured to order. Non-Cancelable Non-Returnable.

 		3 View Availability View Price

5SY8510-7

5SY8510-7

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Miniature circuit breaker 230 V D=70 mm 25 kA according to EN 60947-2, 1P+N, C10

Int aut acces 70mm 25kA 1polo+N C-10A. Cancelations and returns limited. Consult conditions.

 		3 View Availability View Price

5SY5250-6

5SY5250-6

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Circuit breaker Universal current 440 V DC 400 V AC 10kA, 2-pole, B, 50 A

Int aut univ acces 70mm 10kA 2poles B-50A. Manufactured to order. Non-Cancelable Non-Returnable.

 		3 View Availability View Price

5SY7640-7

5SY7640-7

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Miniature circuit breaker 400 V 15kA, 3+N-pole, C, 40A, D=70 mm

Accessable circuit breaker, 15kA, curve C, 3 poles+N, 40A. Cancelations and returns limited. Consult conditions.

 		3 View Availability View Price

5SY4632-7

5SY4632-7

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Miniature circuit breaker 400 V 10kA, 3+N-pole, C, 32 A, D=70 mm

Circuit breaker, 70mm, accessory, 10kA, curve C, 3 poles+N, 32A. Cancelations and returns limited. Consult conditions.

 		3 View Availability View Price

5SY4325-5

5SY4325-5

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Miniature circuit breaker 400 V 10kA, 3-pole, A, 25A, D=70 mm

Circuit breaker, 70mm, accessable, 10kA, curve A, 3 poles, 25A. Cancelations and returns limited. Consult conditions.

 		3 View Availability View Price

5SY8403-8

5SY8403-8

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Miniature circuit breaker 400 V D=70 mm 25 kA according to EN 60947-2, 4P, D3

Int aut acces 70mm 25kA 4poles D-3A. Manufactured to order. Non-Cancelable Non-Returnable.

 		3 View Availability View Price

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