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The Altech Corporation 1E20UM is a UL508 listed manual motor controller from the V-EA-Series, designed for reliable circuit protection. This single-pole breaker utilizes a thermal magnetic trip mechanism.
Key electrical specifications include a 20A current rating and a 277V voltage rating. It offers a short circuit withstand rating of 10kA for 0.3-10A (RC) and 5kA for 13-60A (RC), with no branch circuit protection required for certain configurations. The calibration temperature is 40°C, with an operating temperature range of -25°C to 55°C.
Mechanically, the 1E20UM is designed for DIN rail mounting and features lever actuation. Terminal connections accept wire sizes from 18-3 AWG on the top and 18-2 AWG on the bottom, with a recommended terminal torque of 20 lb.in. The terminal protection degree is IP20.
This circuit breaker is suitable for applications requiring precise motor overload and short-circuit protection, adhering to UL and CSA standards.
277V AC.
20A.
1 pole.
-25°C to 55°C (-13°F to 131°F).
DIN Rail.
Thermal Magnetic.
5kA when used with a UL-listed RK5 back-up fuse or MCCB.