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Schneider Electric LRD3322

LRD3322 TeSys Deca Thermal Overload Relay, 17–25 A, Class 10

MPNLRD3322
Active

Schneider Electric TeSys Deca thermal overload relay, LRD3322, 17–25 A adjustment range, Class 10A trip class, 1 NO + 1 NC auxiliary contact, screw terminals.

$46.29Ref. price · indicative, final on quote
Schneider Electric LRD3322 datasheet (PDF)
StockContact for availability
MOQ1 pcs
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026
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Specifications

LRD3322 key specifications
ParameterValue
Control typeRed push-button stop Blue push-button reset
Network typeDC AC
Product or component typeDifferential 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

LRD3322 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 nameLRD
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

The LRD3322 is a TeSys Deca differential thermal overload relay designed for motor protection in three-phase AC circuits. Its adjustment range of 17–25 A covers standard IEC motor frames in that band. Auxiliary contact composition is 1 NO + 1 NC, wired for trip indication and control circuit interlocking.

Mounts under a TeSys D contactor or on a plate/rail with specific accessories. Screw terminal sizing accepts up to 35 mm² on the power circuit.

Compliant with EN/IEC 60947-4-1 and -5-1, UL 60947-4-1 and -5-1, CSA C22.2 No 60947-4-1 and -5-1, and GB/T 14048.4/.5. Flame retardance rating V1 per UL 94.

Frequently asked questions

What are the key ratings for the LRD3322?

Thermal overload adjustment range 17–25 A, trip class 10A, auxiliary contacts 1 NO + 1 NC, rated operational voltage 1000 V AC on the power circuit.

What compliance certifications does the LRD3322 carry?

The relay is certified to IEC 60947-4-1, UL 60947-4-1, CSA C22.2 No 60947-4-1, and GB/T 14048.4 standards.

How do I source the LRD3322?

The LRD3322 is available to order; submit an RFQ for current stock, lead time, and pricing.

What is the physical size of the LRD3322?

Dimensions: depth 4.5 in (115 mm), width 2.8 in (70 mm), height 3.2 in (81 mm). IP20 protected.

MPN
LRD3322