Miniature circuit breaker Schneider Electric A9F04325 — 25 A, 133 V, 10 kA, IP20, 54×78.5×91 mm

Schneider Electric A9F04325 is a miniature circuit breaker designed for overcurrent protection in residential and light-commercial electrical installations. Rated for 25 A and 133 V with a breaking capacity of 10 kA, the device fits compact distribution boards and panels thanks to its dimensions of 54 × 78.5 × 91 mm and IP20 degree of protection. The breaker interrupts fault currents and isolates circuits to prevent damage to wiring and connected equipment.

Advantages

The product combines compact size with a high breaking capacity, enabling reliable protection in limited-space switchboards. Its thermal-magnetic trip characteristics provide both overload and short-circuit protection, while IP20 rating ensures basic protection against finger contact in typical indoor installations. Mechanical construction and standard mounting make replacement and installation straightforward for electricians and service technicians.

Suitable for

• Residential distribution boards and subpanels
• Light-commercial electrical circuits
• Protection of lighting and small appliance circuits
• Retrofit or replacement in existing panelboards with compatible mounting

Key specifications

• Rated current: 25 A
• Rated voltage: 133 V
• Breaking capacity: 10,000 A (10 kA)
• Degree of protection: IP20
• Overall dimensions: 54 × 78.5 × 91 mm
• Mounting: panel/distribution board compatible

How to use

Install the miniature circuit breaker into the distribution board following applicable electrical codes and the panel manufacturer's instructions. Ensure supply is isolated before connecting conductors. Tighten terminals to the recommended torque, verify correct orientation and secure mounting, then restore power and perform functional tests to confirm proper tripping and reset operation. Use appropriate wire sizes and protective devices upstream and downstream as required by wiring standards.

Recommendations

Use this breaker for circuits matching its rated current and voltage, and avoid installation in environments requiring higher ingress protection than IP20. Schedule periodic inspection for secure connections and signs of overheating; replace the device if mechanical damage or repeated nuisance trips occur.