UL-E20 series motor protectorDetailed product description：

The UL-E20 series motor protector has symmetrical faults (such as overload, overcurrent, locked rotor) and asymmetrical faults (such as various phase breaks, current imbalances, phase to phase short circuits, turn to turn short circuits, etc.) as well as phase sequence, overvoltage, and undervoltage protection.

This motor protector has the characteristics of simple structure, complete functions, high precision, reliable action, convenient use, and small size. It is an ideal replacement product for thermal relays, especially suitable for harsh working environments and poor power grid quality.

Specifications and technical parameters
UL-E20 series motor protector model naming convention


*The basic function does not have phase sequence protection and overvoltage/undervoltage protection.
technical parameters

specification	five	twenty	eighty	three hundred and twenty
technical parameters
Current adjustment range (A)	1-5	4-20	16-80	64-320
Applicable motor power (kw) (380v)	0.5-2.5	2-10	8-40	32-160
Starting delay time (s)	2-20		4-40
Installation method	Card rail		Card rail
Overall dimensions	44(W)X63(D)X86(H)		88(W)X60(D)X115(H)
Main circuit wiring method	Pressure line type		Piercing style (20X32)
Output control terminal at COS Ø=0.4AC380V	Normally open (97, 98) 2A Normally closed (97, 98) 2A		Normally open (97, 98) 3A Normally closed (97, 98) 3A
Power consumption	Not exceeding 0.5W		Not exceeding 1W
Reset method	Power off reset		Power off reset or manual reset

performance metrics
1. Protection functions: phase failure, overload, overcurrent, locked rotor, three-phase current imbalance, phase sequence, overvoltage and undervoltage.
2. Overcurrent action characteristics: trip according to inverse time limit.
3. Current setting error: ≤± 5%
4. Applicable frequency: 45~65Hz
5. Phase interruption action time: 2s
6. Phase sequence protection action time: 0.1s
7. Overvoltage and undervoltage protection: 380V -20% ≤ U ≤ 380V+10%
8. Unbalance protection: When the imbalance degree is ≥ 50% ± 10, the action time is 2 seconds; the three-phase current imbalance degree=[(maximum current value - minimum current value)/maximum current value] × 100%
9. Reset time: 20 minutes
10. Environmental temperature: -40 ℃~+60 ℃
11. Environmental humidity: ≤ 90% (25 ℃)
12. Working power supply voltage: AC380V three-phase

UL-E20 series motor protector external dimensions: