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Schneider Electric LR3D3322

Schneider LR3D3322 TeSys Deca thermal overload relay, 17–25 A, Class 10A

MPNLR3D3322
Obsolete

Schneider TeSys Deca LR3D3322 non-differential thermal overload relay, 17–25 A, Class 10A, 1000 V AC/DC, 1 NO + 1 NC aux, IP20, screw clamp terminals.

$156.52Ref. price · indicative, final on quote
Schneider Electric LR3D3322 datasheet (PDF)
Source DocumentedChannel stated on listing & quote
Condition PhotosReal unit photos / video on request
WhatsApp AnswersFast human replies for machine-down parts
Worldwide DispatchDHL/FedEx — transit quoted per order
Independent China distributor & sourcing agent· Listing updated Sep 2026

Specifications

LR3D3322 key specifications
ParameterValue
Control typeRed push-button stop Blue push-button reset
Network typeAC DC
Product or component typeNon differential thermal overload relay
Climatic withstandIACS E10
VoltagePower circuit 1000 V IEC 60947-4-1 Power circuit 600 V CSA Power circuit 600 V UL
[Ue] rated operational voltage1000 V AC 0...400 Hz power circuit IEC 60947-4-1
[Uimp] rated impulse withstand voltage6 kV IEC 60947-1
Permissible current0.72 A 500 V AC-15 signalling circuit 0.06 A 440 V DC-13 signalling circuit
[Ith] conventional free air thermal current5 A signalling circuit
Network frequency0...400 Hz
Phase failure sensitivityTripping current 130 % of Ir on two phase, the last one at 0
IP degree of protectionIP20 conforming to IEC 60529

All specifications

LR3D3322 additional specifications
ParameterValue
Mounting supportPlate, with specific accessories Rail, with specific accessories Under contactor
Connections - terminalsPower circuit screw clamp terminals 1 0.006...0.05 in² (4...35 mm²) flexible without cable end Power circuit screw clamp terminals 1 0.006...0.05 in² (4...35 mm²) flexible with cable end Power circuit screw clamp terminals 1 0.006...0.05 in² (4...35 mm²) solid without cable end Control circuit screw clamp terminals 2 0.002...0.004 in² (1...2.5 mm²) flexible without cable end Control circuit screw clamp terminals 2 0.002...0.004 in² (1...2.5 mm²) flexible with cable end Control circuit screw clamp terminals 2 0.002...0.004 in² (1...2.5 mm²) solid without cable end
Depth4.5 in (115 mm)
Width2.8 in (70 mm)
Height3.2 in (81 mm)
StandardsEN/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 GB/T 14048.4 GB/T 14048.5 EN 50495
RangeTeSys
CategoryUS10I1222347
Flame retardanceV1 conforming to UL 94
Device short nameLR3D
Relay applicationMotor protection
Tightening torqueControl circuit 15.05 lbf.in (1.7 N.m) screw clamp terminals Power circuit 79.7 lbf.in (9 N.m) screw clamp terminals
Tripping threshold1.14 +/- 0.06 Ir IEC 60947-4-1
Dielectric strength2.2 kV 50 Hz IEC 60947-1
Mechanical robustnessVibrations6 Gn IEC 60068-2-6 Shocks15 Gn for 11 ms IEC 60068-2-7
Associated fuse rating4 A gG for signalling circuit 4 A BS for signalling circuit
Thermal overload classClass 10A IEC 60947-4-1
Temperature compensation-4...140 °F (-20...60 °C)
Auxiliary contact composition1 NO + 1 NC
Ambient air temperature for storage-76...158 °F (-60...70 °C)
Thermal protection adjustment range17...25 A
Ambient air temperature for operation-4...140 °F (-20...60 °C) without derating IEC 60947-4-1

Product details

Overview

The LR3D3322 is a Schneider TeSys Deca non-differential thermal overload relay rated for motor protection from 17 to 25 A with a Class 10A trip curve. It operates on AC or DC control circuits up to 1000 V and carries 1 NO + 1 NC auxiliary contacts.

Ambient temperature compensation is active from -20 to 60 °C, and the relay withstands 6 Gn vibration and 15 Gn shock, keeping the trip threshold stable on mobile or high-vibration equipment.

Applications

Designed for three-phase motor protection in conveyors, pumps, fans, and compressors.

Compliance & certifications

Certified to IEC 60947-4-1, UL 60947-4-1, CSA C22.2 No 60947-4-1, CCC, EAC, BV, DNV-GL, LROS, ATEX (INERIS), and UKCA. Suitable for global panel builds and hazardous-area motor circuits.

Power circuit terminals accept 4–35 mm² solid or flexible conductors; control circuit terminals accept 1–2.5 mm². Torque to 9 N·m (power) and 1.7 N·m (control). Mounting options include direct under-contactor, plate, or DIN rail with accessories.

Dimensions & environment

Dimensions are 114.3 mm deep × 71.12 mm wide × 81.28 mm high. IP20 rated for in-cabinet use. Storage temperature range -60 to 70 °C.

MPN
LR3D3322