Circuit breaker Hager SBN363 3 modules

The Hager SBN363 circuit breaker provides compact, reliable overcurrent protection for electrical installations. Designed for a rated current of 63 A and suitable for systems with coil voltages up to 440 V, this three-module device fits standard DIN-rail switchgear and distribution boards. With an IP20 protection rating and a small footprint (52.5 mm wide, 83 mm high), it is intended for indoor electrical panels and other protected enclosures where space efficiency and dependable circuit interruption are required.

Advantages

The Hager SBN363 combines a high rated current with a narrow width to allow more circuits in limited panel space. Its IP20 enclosure provides basic finger-safe protection in typical indoor installations. The device is engineered for compatibility with common DIN-rail systems and offers straightforward mechanical operation and installation. Its construction supports stable performance under the specified voltage and current conditions, making it suitable for both residential and light commercial applications.

Suitable for

• Protection of branch circuits in residential electrical panels
• Overcurrent protection in light commercial and small industrial switchboards
• Use in space-restricted distribution boards and modular enclosures
• Replacement or upgrade of existing circuit protection with the same functional size

Key specifications

• Rated current: 63 A
• Maximum coil/operating voltage: 440 V
• Modules (width): 3 modules (52.5 mm)
• Height: 83 mm
• Protection rating: IP20 (finger-safe for indoor use)
• Mounting: DIN-rail compatible

How to use

Install the circuit breaker onto a standard DIN-rail in a de-energized panel according to local electrical codes and the manufacturer's installation instructions. Connect incoming and outgoing conductors to the designated terminals, ensuring correct tightening torque and proper conductor preparation. Use the device to interrupt overcurrent situations and switch circuits on or off during maintenance. Verify correct operation after installation by performing appropriate electrical tests and confirming correct tripping behavior under fault conditions.

Recommendations

Ensure installation and any servicing are performed by a qualified electrician. Match the breaker to cable size, upstream protection, and load characteristics to prevent nuisance tripping or overload. Maintain accessible clearance around the distribution board and avoid exposure to moisture or corrosive environments that exceed the IP20 rating.