Riken
The Riken RKB-1 40A is a precision-engineered Miniature Circuit Breaker (MCB) specifically designed for low-current electrical circuits. This single-pole breaker provides essential protection against overloads and short circuits in residential and light commercial environments, ensuring the safety of sensitive equipment and wiring.
Featuring a 40-Ampere rating and a C-Curve tripping characteristic, this unit is the standard choice for protecting dedicated lighting circuits, small fans, and low-power control systems where surge currents are minimal but reliable disconnection is critical.
Rated Current (In): 40 Amp
Breaking Capacity: 3kA (3000 Amps)
Tripping Curve: Type C (Standard protection for lighting and small inductive loads)
Voltage Rating: 240V AC
Mounting: Standard 35mm DIN-rail mount
Pole Configuration: 2-Pole (Double)
| Range | RKB-1 |
| Device application | Distribution |
| Product or component type | Miniature circuit-breaker |
| Device short name | RKB-1 |
| Poles | 2P |
| Number of protected poles | 2 |
| [In] rated current | 40A |
| Network type | AC |
| Trip unit technology | Thermal-magnetic |
| Curve code | C |
| Breaking capacity | 3 kA Icu at 230 V AC 50/60 Hz conforming to SANS 60947-2 and SANS 60898-1 |
| Utilisation category | Category A |
| Suitability for isolation | Yes conforming to SANS 60947-2 |
| Weight | 0.3 kg |
|---|---|
| Dimensions | 8 × 8 × 3.6 cm |
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