RDM1 series plastic case circuit breaker is a new type of circuit breaker designed and developed with international advanced technology. It has the advantages of small size, high breaking capacity, short arc, anti-vibration, and is suitable for AC 50Hz / 60Hz, rated working voltage up to 660V, rated current up to 1250A distribution network, used to distribute power and protect lines and power equipment from overload, short circuit and undervoltage faults.
The RDM1 series molded case circuit breaker is designed for land and marine distribution networks, offering compact size, high breaking capacity, short arc length and vibration resistance. It is rated for up to 690 V insulation voltage (500 V for RDM1‑63) and supports currents up to 1250 A, suitable for 50 Hz/60 Hz AC systems.
The manual provides installation limits (altitude ≤2000 m, ambient temperature +40 °C to –5 °C), wiring diagrams for DC‑24 V and AC‑220/380 V, details on internal and external accessories, mechanical dimensions, and procedures for manual and electric operation. It also lists compliance with GB 14048.2 and recommended conductor sizes. This manual is written in Chinese.
| Rated insulation voltage | 690 V (500 V for RDM1‑63) |
|---|---|
| Rated current | 10 A – 1250 A (various models) |
| Rated frequency | 50 Hz / 60 Hz |
| Impulse withstand voltage (Uimp) | 8 kV |
| Mounting orientation | Vertical or horizontal |
The surrounding air temperature must not exceed +40 °C, must not be lower than –5 °C, and the 24 h average must not exceed +35 °C.
Yes, the breaker can be installed vertically (竖装) or horizontally (横装).
It complies with GB 14048.2 "Low‑voltage switchgear and controlgear – Part 2: Circuit breakers".