SCHNEIDER ELECTRIC DT40 C 10A A9N21024

Schneider Electric iDT40 N C 10A Miniature Circuit Breaker

Description

The Schneider Electric A9N21024 is a high-quality iDT40 N miniature circuit breaker (MCB) from the Acti9 series. This 1P+N device provides essential protection against overcurrents and short circuits in low-voltage electrical systems. Its C-curve characteristic makes it suitable for protecting circuits with general loads such as lighting and socket outlets. Designed for easy DIN rail mounting, it is a standard component for modern electrical distribution boards.

Specifications

• Poles: 1 Pole + Neutral (1P+N)
• Rated Current: 10 A
• Tripping Curve: C
• Rated Operational Voltage (Ue): 230V AC 50/60Hz
• Rated Breaking Capacity (Icu): 10 kA at 230V AC
• Rated Impulse Withstand Voltage (Uimp): 4 kV
• Mounting: DIN Rail

Label Info

• Manufacturer: Schneider Electric
• Type: iDT40 N C 10A
• Part Number: A9N21024
• EAN: 3606480381195
• Standard: EN60947-2

Application

This MCB is commonly used in residential, commercial, and industrial buildings for final circuit protection. It is ideal for safeguarding lighting circuits, power outlets, and other resistive or slightly inductive loads from damage caused by electrical faults.

Country of Origin

This product is proudly Made in France.

CO2 Impact

By choosing this reused component, you are preventing the emission of approximately 4.8 kg of CO2. This saving is comparable to the emissions from driving an average car for 24 kilometers.

Availability

This item is in stock and ready for immediate dispatch. Order now from spareparts2day for expert support and fast delivery.

FAQ

What is the primary difference between a 1P and a 1P+N circuit breaker?

A 1P (single pole) breaker only interrupts the phase conductor, while a 1P+N (single pole + neutral) breaker interrupts both the phase and neutral conductors simultaneously. This provides a complete isolation of the circuit, which is often required for safety in certain installations.

What does the ‘C’ curve rating signify on this A9N21024 breaker?

The ‘C’ curve is a general-purpose tripping characteristic. It means the breaker will trip instantaneously at 5 to 10 times its rated current (50-100A for this 10A breaker). This makes it suitable for applications with moderate inrush currents, such as lighting, standard outlets, and small motors.

Is this circuit breaker compatible with other Schneider Electric Acti9 accessories?

Yes, the iDT40 N is part of the Acti9 system and is designed to be compatible with a wide range of Acti9 accessories, such as auxiliary contacts (iOF), shunt trips (iMX), and busbars for easy and clean panel wiring.

Last Update: Friday, March 13, 2026

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