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Datasheet generated 2026-06-07
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Schneider TeSys LRD21 Thermal Overload Relay 12-18A

Schneider Electric · Switchgear & Protection · Overload Relays · France · se.com
Part Number
LRD21  ·  HS 8536.20
Schneider TeSys LRD21 Thermal Overload Relay 12-18A

TeSys LRD21 three-pole thermal overload relay, 12-18A range. Class 10A trip, 1NO+1NC signalling, manual/auto reset.

Technical Specifications

SeriesTeSys LRD, Current Range: 12-18A, Trip Class: 10A, Poles: 3, Auxiliary Contacts: 1NO + 1NC, Reset: Manual / Auto selectable, Terminal Type: Screw clamp, Mounting: Directly under LC1D09-D38

Properties

Primary standardIEC 60947-4-1; UL 508

Compatibility

Direct mount under LC1D09 to LC1D38 contactors. Used with LC1D18 (7.5kW) motor starters.

Standards

Approvals