Schneider Electric TeSys LR2D3557 Thermal Overload Relay 37-50 A Class 20

Schneider Electric LR2D3557 TeSys thermal overload relay for motor protection with a 37-50 A setting range and Class 20 trip characteristic per IEC 60947-4-1. Bimetallic differential design with one NO plus one NC auxiliary contact, mounts under LC1D80 or LC1D95 contactors.

Manufacturer part number (MPN)

LR2D3557

EAN / GTIN

3389110229103

HS code

8536.90

Sales unit

pcs

Package quantity

12 pcs

Setting range

37-50 A

Range

TeSys

Product name

TeSys LRD; TeSys Deca

Product or component type

Differential thermal overload relay

Device short name

LR2D

Relay application

Motor protection

Product compatibility

LC1D80; LC1D95

Network type

DC; AC

Thermal overload class

Class 20 conforming to IEC 60947-4-1

Thermal protection adjustment range

37…50 A

[Ui] rated insulation voltage

Power circuit: 600 V conforming to CSA; Power circuit: 600 V conforming to UL; Power circuit: 690 V conforming to IEC 60947-4-1

Network frequency

0...400 Hz

Mounting support

Plate, with specific accessories; Rail, with specific accessories; Under contactor

Tripping threshold

1.14 +/- 0.06 Ir conforming to IEC 60947-4-1

Auxiliary contact composition

1 NO + 1 NC

[Ith] conventional free air thermal current

5 A for signalling circuit

Permissible current

0.72 A at 500 V AC-15 for signalling circuit; 0.06 A at 440 V DC-13 for signalling circuit

[Ue] rated operational voltage

1000 V AC 0...400 Hz for power circuit conforming to IEC 60947-4-1

Associated fuse rating

4 A gG for signalling circuit; 4 A BS for signalling circuit

[Uimp] rated impulse withstand voltage

6 kV

Phase failure sensitivity

Tripping current 130 % of Ir on two phase, the last one at 0

Control type

Red push-button: stop; Blue push-button: reset

Temperature compensation

-20…60 °C

Connections - terminals

Power circuit: screw clamp terminals 1 cable(s) 4…35 mm² flexible without cable end; Power circuit: screw clamp terminals 1 cable(s) 4…35 mm² flexible with cable end; Power circuit: screw clamp terminals 1 cable(s) 4…35 mm² solid without cable end; Control circuit: screw clamp terminals 2 cable(s) 1…2.5 mm² flexible without cable end; Control circuit: screw clamp terminals 2 cable(s) 1…2.5 mm² flexible with cable end; Control circuit: screw clamp terminals 2 cable(s) 1…2.5 mm² solid without cable end

Tightening torque

Control circuit: 1.7 N.m - on screw clamp terminals; Power circuit: 9 N.m - on screw clamp terminals

Height

100 mm

Width

75 mm

Depth

121 mm

Product weight

0.535 kg

Climatic withstand

conforming to IACS E10

IP degree of protection

IP20 conforming to IEC 60529

Ambient air temperature for operation

-20…60 °C without derating conforming to IEC 60947-4-1

Ambient air temperature for storage

-60…70 °C

Flame retardance

V1 conforming to UL 94

Mechanical robustness

Vibrations: 6 Gn conforming to IEC 60068-2-6; Shocks: 15 Gn for 11 ms conforming to IEC 60068-2-7

Dielectric strength

2.2 kV at 50 Hz conforming to IEC 60947-1

Standards

EN/IEC 60947-4-1; EN/IEC 60947-5-1; UL 60947-4-1; UL 60947-5-1; CSA C22.2 No 60947-4-1; CSA C22.2 No 60947-5-1

Product certifications

IEC; UL; CSA; EAC; DNV-GL; LROS (Lloyds register of shipping); UKCA

Warranty (in months)

18

HS Code

8536.90

• EAN 3389110229103
• SAP 1000066448
• Code 8739643