100A 2 Pole 100mA A Type Time Delayed RCD (NL1-100-2100/100-S)

The NL1-100-2100/100-S 100A 2 Pole 100mA A Type Time Delayed RCD is a high-performance residual current device designed to provide reliable earth fault protection in commercial and domestic electrical installations. Manufactured by CHINT, this time delayed RCD is ideal where selective protection is required and nuisance tripping must be minimised, such as in distribution boards, sub-mains and high load circuits.

With a 100 amp current rating and 100 milliamp residual current sensitivity, this two-pole RCD quickly detects imbalance between live and neutral conductors caused by earth leakage faults. The Type A characteristic allows it to detect both standard AC leakage and pulsating DC leakage currents, making it suitable for circuits supplying modern electronic equipment and appliances.

The built-in time delay function provides improved discrimination between upstream and downstream protective devices. This helps prevent unnecessary power interruptions by ensuring only the affected circuit disconnects during transient or minor faults. It is particularly useful in installations where continuity of supply is important.

CHINT’s NL1 series RCDs are designed to meet recognised electrical safety standards, providing dependable protection for systems that require additional earth fault protection. This makes the unit suitable for use in both TT and TN earthing systems, as well as commercial, industrial and larger domestic installations.

The slimline design allows for easy installation into standard DIN-rail enclosures. Its compact construction saves space within consumer units and distribution boards, while the robust build quality ensures long-term reliability.

Whether you are upgrading an existing electrical system or installing new protective devices, the NL1-100-2100/100-S offers a practical balance of safety, performance and convenience for professional electricians and experienced DIY users alike.

100A 2 Pole 100mA A Type Time Delayed RCD (NL1-100-2100/100-S) – Data Sheet