Comprehensive catalogue of Changshu Switchgear CM5 series molded case circuit breakers with technical specs, installation guidance and communication options.
The Changshu Switchgear CM5 series offers a modular, high‑breaking‑capacity molded case circuit breaker family for low‑voltage distribution systems. Models include the standard CM5/CM5L, the residual‑current protected CM5L/CM5ZL, and the high‑performance CM5Z series, all featuring interchangeable hot‑magnetic and electronic trip units.
The catalogue provides detailed product overviews, normal operating and installation conditions, technical performance tables, quick‑selection charts, accessory codes, wiring diagrams, and optional communication modules such as Modbus‑compatible monitoring units. Safety clearances, IP protection levels, mechanical and electrical life ratings, and high‑voltage options are also documented. This manual is written in Chinese.
| Rated current (CM5/CM5L) | 1.5 A ~ 1600 A |
|---|---|
| Adjustable current (CM5Z/CM5ZL) | 12.5 A ~ 1600 A |
| Short‑time withstand current Icu (AC400 V) | 200 kA |
| Short‑time withstand current Ics (AC400 V) | 150 kA |
| Rated voltage | AC400 V / AC690 V |
| IP protection (body) | IP20 |
| IP protection (terminal cover / motorized mechanism) | IP40 |
| Current transformer accuracy | < 1.5 % |
| Power/energy measurement accuracy | < 2.5 % |
Yes, the CM5Z/CM5ZL models can be equipped with a monitoring unit that provides Modbus communication, cabinet‑door display, setting and control.
The main body has an IP20 rating, while the terminal cover and motorized operation mechanism achieve IP40.