Miniature circuit breaker Schneider Electric A9F04332 — 32 A, 133 V, 10 kA, IP20, 54×78.5×91 mm

Schneider Electric A9F04332 is a miniature circuit breaker designed for protection of low-voltage circuits in residential and light commercial installations. Rated for 32 A and 133 V with a breaking capacity of 10 kA and IP20 enclosure protection, this compact device fits standard distribution boards and panel-mounted applications. Its dimensions (54 × 78.5 × 91 mm) allow space-efficient installation while providing reliable overcurrent and short-circuit protection for lighting, sockets and small motor circuits.

Advantages

The miniature circuit breaker provides precise thermal-magnetic tripping characteristics suitable for typical household and light commercial loads. Its 10 kA breaking capacity ensures safe interruption of short-circuit currents within common low-voltage networks. The IP20 protection rating shields live parts from accidental contact in indoor panel environments, and the compact dimensions facilitate installation in crowded distribution boards. Mechanical construction and standardized mounting enable compatibility with DIN-rail systems and straightforward replacement or upgrade of existing protective devices.

Suitable for

• Protection of lighting circuits in residential and commercial premises
• Protection of socket outlets and general-purpose circuits up to 32 A
• Panel and distribution board installations where space is limited
• Protection of small single-phase motor loads and equipment in light commercial settings

Key specifications

• Rated current: 32 A
• Rated voltage: 133 V (AC)
• Breaking capacity: 10,000 A (10 kA)
• Protection degree: IP20
• Mounting: DIN-rail / panel-compatible form factor
• Dimensions (W × H × D): 54 × 78.5 × 91 mm

How to use

Install the miniature circuit breaker on a compatible DIN rail inside a distribution board or panel, following local electrical codes and safety practices. Connect the supply and load conductors to the terminal points, ensuring proper torque and secure clamping. Verify the correct orientation and tightness, then restore power and test switching and tripping behavior by applying appropriate load conditions or using a test device. For commissioning and any maintenance, disconnect power and follow lockout/tagout procedures before accessing terminals.

Recommendations

Use this miniature circuit breaker as part of a coordinated protection scheme, matching upstream and downstream protective devices and conductor sizing. Perform periodic inspection of connections and thermal conditions, and replace the device if mechanical damage or signs of overheating are detected.