Miniature Circuit Breaker Schneider Electric A9F03210 — 10 A, 133 V, 10 kA, IP20, 36 × 78.5 × 91 mm

Schneider Electric A9F03210 is a miniature circuit breaker designed for protection of electrical circuits with a rated current of 10 A and a rated voltage of 133 V. The device delivers a breaking capacity of 10 kA and offers IP20 protection. Its compact form factor with DIN-rail mounting dimensions (36 mm width, 78.5 mm depth, 91 mm height) makes it suitable for residential and light-commercial distribution boards where reliable overload and short-circuit protection is required.

Advantages

The A9F03210 provides predictable tripping characteristics for circuit protection at 10 A and withstands fault currents up to 10,000 A, ensuring circuit interruption under high-fault conditions. The IP20 rating protects internal electrical parts from contact while allowing adequate ventilation. Compact DIN-rail mounting dimensions save panel space and simplify installation in constrained enclosures. The product is manufactured by Schneider Electric, which ensures compatibility with common distribution systems and standardized mounting.

Suitable for

• Protection of branch circuits in residential electrical panels
• Overload and short-circuit protection in light-commercial installations
• DIN-rail mounted distribution boards and control cabinets
• Applications requiring compact circuit protection with a 10 A rating

Key specifications

• Rated current: 10 A
• Rated voltage: 133 V
• Breaking capacity: 10,000 A (10 kA)
• Ingress protection: IP20
• Mounting: DIN-rail
• Dimensions (W × D × H): 36 × 78.5 × 91 mm

How to use

Mount the miniature circuit breaker onto a standard DIN-rail inside the distribution board, ensuring the device is oriented according to the panel wiring diagram. Connect line and load conductors to the designated terminals, tighten terminal screws to the recommended torque, and verify correct polarity and earthing of the installation. After wiring, switch the breaker to the ON position and test the circuit under controlled conditions to confirm proper operation and tripping behavior.

Usage recommendations

Use this breaker within its rated parameters: 10 A current and 133 V voltage. Ensure installations comply with local electrical codes and standards, and verify coordination with upstream and downstream protective devices. Periodically inspect terminals for tightness and signs of heating; replace the device if mechanical damage or repeated nuisance tripping occurs.