Product Overview
The RS PRO NF12 Residual Current Circuit Breaker is a 40A, 2-pole Type A RCCB designed for 230V AC installations requiring 300mA residual-current protection. Its DIN-rail format makes it suitable for use in compatible distribution boards and electrical protection assemblies.
Key Features
- 40A current rating for suitable residential and light electrical distribution applications.
- 300mA Type A residual-current sensitivity detects alternating and pulsating direct residual currents.
- 2-pole configuration for 230V AC circuits.
- Designed for mounting on a 35mm DIN rail for straightforward integration into compatible distribution equipment.
- IP20 degree of protection for installed indoor electrical enclosures.
- Terminal design helps prevent conductors being inserted outside the intended connection area.
Applications
- Electrical distribution boards requiring residual-current protection.
- Installations with sensitive electronic equipment where Type A residual-current detection is required.
- Applications where 300mA residual-current protection is specified for fault or fire protection.
Why Choose This Product?
This RS PRO RCCB combines a practical DIN-rail format with a 40A rating and Type A residual-current detection. It is a suitable option for installers requiring a clearly specified 2-pole, 230V AC RCCB for compatible electrical protection applications.
Important Notes
- Electrical installation and product selection should be completed by a suitably qualified electrician in accordance with applicable South African regulations and the requirements of the installation.
- Confirm that the 40A rating, 300mA trip sensitivity and Type A tripping characteristics are appropriate for the intended circuit before installation.
- Install inside a suitable electrical enclosure; the product itself is rated IP20.
Technical Specifications
| Specification | Detail |
|---|---|
| Brand | RS PRO |
| Series | NF12 |
| Product Type | Residual Current Circuit Breaker |
| RS Stock Number | 284-2370 |
| Current Rating | 40A |
| Number of Poles | 2 |
| Trip Sensitivity | 300mA |
| Tripping Characteristics | Type A |
| Rated AC Voltage | 230V AC |
| Mount Type | DIN Rail |
| DIN Rail Width | 35mm |
| IP Rating | IP20 |
| Width | 70mm |
| Height | 85mm |
| Standards / Approvals | IEC/EN 61008, CE, VDE |
| Country of Origin | Slovenia |
Important:
All solar products, power systems, water heating and gas products and their components must be installed by appropriately qualified personnel. All installations must adhere to local wiring regulations and standards. Sustainable Online will not be held liable for any product malfunctions as a result of incorrectly installed systems.

