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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

5SY4503-8

5SY4503-8

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Miniature circuit breaker 230 V 10kA, 1+N-pole, D, 3 A, D=70 mm

Circuit breaker, 70mm, accessory, 10kA, curve D, 1 pole+N, 3A. Cancelations and returns limited. Consult conditions.

 		3 View Availability View Price

5SY7304-8

5SY7304-8

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Miniature circuit breaker 400 V 15kA, 3-pole, D, 4A, D=70 mm

Accessable circuit breaker, 15kA, curve D, 3 poles, 4A. Manufactured to order. Non-Cancelable Non-Returnable.

 		3 View Availability View Price

5SY7304-7

5SY7304-7

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Miniature circuit breaker 400 V 15kA, 3-pole, C, 4A, D=70 mm

Accessable circuit breaker, 15kA, curve C, 3 poles, 4A. Cancelations and returns limited. Consult conditions.

 		3 View Availability View Price

5SY5408-7

5SY5408-7

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Circuit breaker Universal current 880 V DC 400 V AC 10kA, 4-pole, C, 8A max. 1000 V DC

Universal circuit breaker AC-DC 880V DC; 400V AC 10KA, 4pole, C, 8A MAX. DC 1000V. Manufactured to order. Non-Cancelable Non-Returnable.

 		3 View Availability View Price

5SP9120-7KC47

5SP9120-7KC47

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CIRCUIT BREAKER 230/400V 50KA ACC. IEC 947-2, T92 1-POLE, C, 20A

 		3 View Availability View Price

5SP4391-8

5SP4391-8

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Miniature circuit breaker 400 V 10kA, 3-pole, D, 100 A, D=70 mm

Circuit breaker, 70mm, accessable, 10kA, curve D, 4.5mód., 3 poles, 100A. Cancelations and returns limited. Consult conditions.

 		3 View Availability View Price

5SY7163-6

5SY7163-6

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Miniature circuit breaker 230/400 V 15kA, 1-pole, B, 63A, D=70 mm

Circuit breaker, 70mm, accessory, 15kA, curve B, 1 pole, 63A. Manufactured to order. Non-Cancelable Non-Returnable.

 		3 View Availability View Price

5SY7163-7

5SY7163-7

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Miniature circuit breaker 230/400 V 15kA, 1-pole, C, 63 A, D=70 mm

Accessable circuit breaker, 15kA, curve C, 1 pole, 63A. Cancelations and returns limited. Consult conditions.

 		3 View Availability View Price

5SY7606-6

5SY7606-6

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Miniature circuit breaker 400 V 15kA, 3+N-pole, B, 6 A, D=70 mm

Circuit breaker, 70mm, accessable, 15kA, curve B, 3 poles+N, 6A. Manufactured to order. Non-Cancelable Non-Returnable.

 		3 View Availability View Price

5SY7606-8

5SY7606-8

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Miniature circuit breaker 400 V 15kA, 3+N-pole, D, 6 A, D=70 mm

Accessable circuit breaker, 15kA, curve D, 3 poles+N, 6A. Manufactured to order. Non-Cancelable Non-Returnable.

 		3 View Availability View Price

5SY8103-8

5SY8103-8

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Circuit breaker 230/400 V D=70 mm 25 kA according to EN 60947-2, 1P, D3

Int aut acces 70mm 25kA 1pole D-3A. Manufactured to order. Non-Cancelable Non-Returnable.

 		3 View Availability View Price

5SY8103-7

5SY8103-7

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Circuit breaker 230/400 V D=70 mm 25 kA according to EN 60947-2, 1P, C3

Int aut acces 70mm 25kA 1pole C-3A. Cancelations and returns limited. Consult conditions.

 		3 View Availability View Price

5SY7463-7

5SY7463-7

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Miniature circuit breaker 400 V 15kA, 4-pole, C, 63 A, D=70 mm

Accessory circuit breaker, 15kA, C-curve, 4-pole, 63A. Cancelations and returns limited. Consult conditions.

 		3 View Availability View Price

5SY4202-5

5SY4202-5

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Miniature circuit breaker 400 V 10kA, 2-pole, A, 2A, D=70 mm

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

 		3 View Availability View Price

5SY4202-7

5SY4202-7

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Miniature circuit breaker 400 V 10kA, 2-pole, C, 2A, D=70 mm

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

 		3 View Availability View Price

5SY4202-8

5SY4202-8

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Miniature circuit breaker 400 V 10kA, 2-pole, D, 2A, D=70 mm

Circuit breaker, 70mm, accessory, 10kA, curve D, 2 poles, 2A. Cancelations and returns limited. Consult conditions.

 		3 View Availability View Price

5SY4663-8

5SY4663-8

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Miniature circuit breaker 400 V 10kA, 3+N-pole, D, 63 A, D=70 mm

Circuit breaker, 70mm, accessable, 10kA, curve D, 3 poles+N, 63A. Cancelations and returns limited. Consult conditions.

 		3 View Availability View Price

5SY7214-7

5SY7214-7

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Miniature circuit breaker 400 V 15kA, 2-pole, C, 0.3A, D=70 mm

Accessable circuit breaker, 15kA, curve C, 2 poles, 0.3A. Manufactured to order. Non-Cancelable Non-Returnable.

 		3 View Availability View Price

5SY7214-8

5SY7214-8

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Miniature circuit breaker 400 V 15kA, 2-pole, D, 0.3 A, D=70 mm

Accessable circuit breaker, 15kA, curve D, 2 poles, 0.3A. Manufactured to order. Non-Cancelable Non-Returnable.

 		3 View Availability View Price

5SY4620-8

5SY4620-8

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Miniature circuit breaker 400 V 10kA, 3+N-pole, D, 20 A, D=70 mm

Circuit breaker, 70mm, accessory, 10kA, D curve, 3 poles+N, 20A. Cancelations and returns limited. Consult conditions.

 		3 View Availability View Price

5SY8213-7

5SY8213-7

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Miniature circuit breaker 400 V D=70 mm 25 kA according to EN 60947-2, 2P, C13

Int aut acces 70mm 25kA 2poles C-13A. Manufactured to order. Non-Cancelable Non-Returnable.

 		3 View Availability View Price

5SY7401-8

5SY7401-8

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Miniature circuit breaker 400 V 15kA, 4-pole, D, 1 A, D=70 mm

Accessable circuit breaker, 15kA, curve D, 4 poles, 1A. Manufactured to order. Non-Cancelable Non-Returnable.

 		3 View Availability View Price

5SY5113-7

5SY5113-7

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Circuit breaker Universal current 220 V DC 230/400 V AC 10kA, 1-pole, C, 13A

Int aut univ acces 70mm 10kA 1polo C-13A. Cancelations and returns limited. Consult conditions.

 		3 View Availability View Price

5SP3316-3

5SP3316-3

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Main miniature circuit breaker (SHU), 3-pole, E 16, 400V

INT. AUT. MAGNETERMICO PPAL. (SHU), 3 POLES, E 16, 400V. Cancelations and returns limited. Consult conditions.

 		3 View Availability View Price

5SY7505-8

5SY7505-8

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Miniature circuit breaker 230 V 15kA, 1+N-pole, D, 0.5 A, D=70 mm

Accessable circuit breaker, 15kA, curve D, 1 pole+N, 0.5A. Manufactured to order. Non-Cancelable Non-Returnable.

 		3 View Availability View Price

5SP3816-2

5SP3816-2

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Main miniature circuit breaker (SHU), 3x 1-pole, E 16A, 230/400 V Mounting on 40 mm busbars

AUTOMAT MAGNETOTERMIC PRINCIPAL (SHU), 3X1 POLE, E 16A, 230/400V MOUNTING ON BARS COLECT 40 MM. Manufactured to order without possibility of return or cancellation.

 		3 View Availability View Price

5SY8501-7

5SY8501-7

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Miniature circuit breaker 230 V D=70 mm 25 kA according to EN 60947-2, 1P+N, C1

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

 		3 View Availability View Price

5SY8501-8

5SY8501-8

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Miniature circuit breaker 230 V D=70 mm 25 kA according to EN 60947-2, 1P+N, D1

Int aut acces 70mm 25kA 1pole+N D-1A. Manufactured to order. Non-Cancelable Non-Returnable.

 		3 View Availability View Price

5SY7650-8

5SY7650-8

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Miniature circuit breaker 400 V 15kA, 3+N-pole, D, 50 A, D=70 mm

Accessable circuit breaker, 15kA, curve D, 3 poles+N, 50A. Manufactured to order. Non-Cancelable Non-Returnable.

 		3 View Availability View Price

5SY7650-7

5SY7650-7

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Miniature circuit breaker 400 V 15kA, 3+N-pole, C, 50 A, D=70 mm

Accessable circuit breaker, 15kA, curve C, 3 poles+N, 50A. Cancelations and returns limited. Consult conditions.

 		3 View Availability View Price

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