Residual Current Device Noark 108336 6 kA 4-pole 40 A 100 mA Type AC

Noark Residual Current Device model 108336 is a 4-pole RCD with a rated current of 40 A and a residual operating current of 100 mA. The device is Type AC and has a breaking capacity of 6 kA. It is designed to monitor alternating residual currents and to rapidly disconnect the supply when a leakage to earth is detected, reducing the risk of electric shock and fire in distribution installations. The compact four-pole design allows integration into three-phase systems with neutral protection in residential and light commercial distribution boards.

Advantages

The Noark RCD provides reliable AC-only residual current detection with fast disconnection characteristics and a 6 kA breaking capacity suitable for common low-voltage distribution networks. Its 4-pole configuration protects all phases and neutral in three-phase systems. Rated at 40 A with a 100 mA trip threshold, the device offers protection against higher leakage currents that can cause fire hazards while maintaining compatibility with standard DIN-rail mounting and typical panel wiring practices.

Suitable for

• Three-phase distribution boards requiring neutral protection
• Residential and light commercial electrical installations
• Circuits where AC-only fault detection is required
• Protection against fire risks from high leakage currents

Key specifications

• Poles: 4-pole configuration for three-phase plus neutral
• Rated current: 40 A
• Residual operating current (sensitivity): 100 mA
• Type: AC (detects alternating residual currents)
• Breaking capacity: 6 kA
• Mounting: DIN-rail compatible housing for standard distribution boards

How to use

Install the RCD in the distribution board on a standard DIN-rail according to local electrical regulations. Connect the incoming three-phase supply and neutral to the designated terminals and wire outgoing circuits through the load terminals. Ensure correct orientation and tighten terminals to the recommended torque. After installation, perform an insulation and functionality check, and test the device with the built-in test button or a designated RCD tester to verify operation. Commission the circuit only after confirming correct tripping behavior and secure terminal connections.

Usage recommendations

Use this 100 mA RCD where protection against fire caused by significant leakage currents is required and where AC-only detection is acceptable. Regularly test the device according to local standards and perform periodic inspection of terminal connections. For locations requiring detection of pulsating DC residual currents or higher sensitivity (e.g., 30 mA for personal protection), consider selecting an RCD with appropriate type and sensitivity.