EasyPact TVS thermal overload relay LRE357 37...50A

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Model: 004.030.084

Manufacturer: Schneider Electric

Barcode: 3606480329876

EasyPact TVS thermal overload relay LRE357 with possible I_max calibration 37...50A and class 10A is designed to protect AC circuits and motors against:

overloads
phase failure
long starting time
prolonged stalled rotor condition

The thermal relay controls permanently the current driven by the motor. When this current exceeds the setting it's auxiliary contacts will change state, causing the motor to stop.

☎ Price by call

Specifications

Power circuit characteristics
Tripping class	10A (standard IEC 60947-4-1 specifies a tripping time for 7.2 times the setting current I_r: class 10 A: between 2 and 10 seconds)
Rated insulation voltage	690V
Rated impulse withstand voltage (U_imp)	6kV
Frequency limits of the operating current	50...60Hz
Setting range	37...50A
Fuses to be used with relay	aM - 63A gG - 100A
Compatible with contactor	LC1E50 LC1E65 LC1E80 LC1E95
Power circuit connections
Flexible cable without cable end	4...35mm²
Flexible cable with cable end	4...35mm²
Solid cable without cable end	4...35mm²
Tightening torque	9N·m
Auxiliary contact characteristics
Conventional thermal current	5A
Max sealed consumption of the operating coils of controlled contactors	1.63A/220VAC
Protection against short-circuits by gG or by GB2	5A
Connection by screw clamp terminals	2х1...2,5mm² - flexible cable without cable end 2х1...2,5mm² - flexible cable with cable end 2х1...2,5mm² - solid cable without cable end
Tightening torque	1,7N·m
Environment
Degree of protection	IP20
Protective treatment	"TH"
Storage temperature	-60°C...+80°C
Normal operation temperature without derating	-20°C...+60°C
Operation temperature with derating	-20°C...+70°C
Operating position	any
Flame resistance	850°C
Shock resistance	6gn - 11ms
Vibration resistance	3gn
Dielectric strength at 50Hz	6kV
Operating characteristics
Temperature compensation	-20°C...+60°C
Tripping threshold	1,14±0,06 I_r A
Sensitivity to phase failure	tripping current 130% of I_r on two phase, the last one at 0

Electrical diagram

EasyPact TVS thermal overload relays
[1.14 Mb]