Telemecanique LRD3357 Thermal Overload Relay 37–50A 1000V TeSys Square D New

All the best /Klaus

Protect motors and industrial circuits with this genuine Telemecanique/Schneider Electric LRD3357 thermal overload relay. This relay is new in box, never installed, with shelfwear on the packaging, and comes complete with original instructions.

Brand & Model

• Brand: Telemecanique (Schneider Electric / Square D)

• Model: LRD3357 (TeSys Series)

• Type: Thermal Overload Relay

Technical Specifications

• Adjustment Range: 37–50A, class 10A trip

• Rated Insulation Voltage: 1000V AC (0–400Hz)

• Rated Operational Voltage: 690V AC

• Auxiliary Contacts: 1 NO + 1 NC

• Mounting: Direct on LC1D40, LC1D50, LC1D65, LC1D80 TeSys contactors or DIN rail

• Reset Methods: Manual or automatic

• Phase Failure Sensitivity: Yes

• Ambient Temp. Range: –20°C to +60°C

• Dimensions: 55mm x 123mm x 236mm

Main Features

• Three-pole motor protection, detects overloads and phase failures

• Tool-free installation on compatible contactors

• Trip indicator, test and reset buttons, sealable cover

• Vibration-resistant and compact for easy panel integration

Collector & Background Info

Telemecanique and Schneider Electric relays are highly regarded in automation, control, and manufacturing. The LRD3357 protects motors in critical machinery, making it valuable for OEMs, MROs, and automation hobbyists needing reliable motor overload protection. New old stock units like this are increasingly sought for legacy motor circuit upgrades.

Condition: New in box, never used, complete with documentation. Shelfware visible on box.