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The Altech Corporation 3ZU20L is a thermal magnetic circuit breaker designed for reliable circuit protection. This 3-pole unit offers a current rating of 20A and a voltage rating of 480V AC, with dual voltage ratings of 480Y/277VAC also specified.
It is built with a strong thermoplastic housing and terminal barriers, and features a lever actuator for operation. The breaker is suitable for DIN rail mounting, making installation straightforward in control panels and enclosures. The 3ZU20L series is UL489 listed, indicating compliance with rigorous safety standards for use in North America.
Key electrical specifications include a rated breaking capacity of 2000A and a short-circuit breaking capacity (Icu) of 55kA at 400V AC. It also provides rated operation power at AC-3 for 230V (5.5kW) and 400V (7.5kW). The breaker operates within an ambient temperature range of -25°C to 60°C and has a mechanical life of 6,000 cycles and an electrical life of 10,000 cycles.
Environmental considerations include IP20 terminal protection. The unit supports various terminal sizes, including 14-3 AWG and 18-16 AWG, with specified torque values for secure connections. The series designation is 'L', indicating compliance with UL 489 standards.
| Qty | Low | High |
|---|---|---|
| 1+ | $0.99 | $0.99 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The current rating is 20A.
The voltage rating is 480V AC.
It has 3 poles.
It is a thermal magnetic circuit breaker.
It is designed for DIN rail mounting.
The ambient temperature range is -25°C to 60°C.
The rated short-circuit breaking capacity (Icu) at 400V AC is 55kA.