Schneider A9R21240 Residual current circuit breaker (RCCB), Acti9 iID, 2P, 40A,

The Schneider Electric A9R21240 is a 2-pole Residual Current Circuit Breaker (RCCB) from the Acti 9 iID series, rated at 40A with 30mA sensitivity. Designed for Type A networks, it provides instantaneous residual current protection and is suitable for use in residential and commercial distribution systems.

Technical specifications:

• Commercial reference: A9R21240
• Manufacturer: Schneider Electric
• EAN:
• Series / range: Acti 9 iID
• Product type: Residual Current Circuit Breaker (RCCB)
• Number of poles: 2P
• Neutral position: Left
• Rated current [In]: 40 A
• Network type: AC
• Residual current sensitivity: 30 mA
• Tripping delay: Instantaneous
• Residual current class: Type A
• Rated voltage [Ue]: 220...240 V AC 50/60 Hz
• Network frequency: 50/60 Hz
• Making and breaking capacity: Idm 1500 A / Im 1500 A
• Rated conditional short-circuit current: 10 kA
• Rated insulation voltage [Ui]: 500 V AC 50/60 Hz
• Rated impulse withstand voltage [Uimp]: 6 kV
• Impulse current: 250 A
• Mounting: DIN rail, clip-on
• DIN rail rows: 4 (9 mm pitch)
• Width: 36 mm
• Height: 91 mm
• Depth: 73.5 mm
• Weight: 0.21 kg
• IP protection: IP20 (IEC 60529), IP40 in modular enclosure (IEC 60529)
• Operating temperature: -25...60 °C
• Storage temperature: -40...85 °C
• Connection: Single terminal block upper or lower, 1...35 mm² rigid / 1...25 mm² flexible
• Tightening torque: 3.5 N.m
• Strip length: 14 mm
• Mechanical endurance: 20,000 cycles
• Electrical endurance (AC-1): 15,000 cycles
• Standard: EN/IEC 61008-1
• Color: White

Features and benefits:

• Type A residual current protection detects both sinusoidal and pulsating DC residual currents
• Instantaneous tripping response ensures fast disconnection on fault detection
• Clip-on DIN rail mounting enables quick and tool-free installation
• Contact position indicator provides clear visual status at a glance
• Independent tripping technology operates without reliance on the supply voltage
• Lockable handle allows the device to be secured in open or closed position

Applications:

• Final distribution boards in residential buildings requiring personal protection against electric shock
• Commercial installations with mixed or non-linear loads where pulsating DC fault currents may occur
• Socket outlet circuits in offices, retail, or light industrial environments
• Modular enclosure panels requiring compact 4-module-wide protection devices

Compliant with EN/IEC 61008-1. Part of the Schneider Electric Acti 9 range.

Also known as: Schneider A9R21240, Schneider Electric A9R21240, Schneider 40A RCCB 30mA Type A, Acti9 iID 2P 40A residual current device.