⚡ TeSys Deca Thermal Relays

TeSys Deca thermal relays(LRD series) are Schneider Electric’s thermal overload protection devices designed to pair directly with TeSys Deca contactors (LC1D).
They protect motors against overload, phase loss, and stall conditions, forming a complete, coordinated motor‑starter block with TeSys Deca contactors and GV motor circuit breakers.

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🔧 Key Points

• Thermal overload protection — protects motors from overheating due to sustained overcurrent.
• Phase‑loss sensitivity — fast trip on single‑phasing.
• Adjustable current range — wide setting range to match motor FLA.
• Manual/auto reset — selectable depending on application.
• Trip indicator — clear visual status.
• Direct mounting — snaps onto LC1D contactors for compact starters.
• Auxiliary contacts — for signalling and control‑circuit interlocking.
• Coordination with GV breakers — forms Type 1/Type 2 coordinated starters.

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🧩 Where TeSys Deca Thermal Relays Fit

They are used with:

• LC1D contactors — 9 A to 150 A
• GV2/GV3/GV4 breakers — for short‑circuit protection
• ATS130 soft starters — as part of coordinated motor‑starter assemblies

Together, they form:

• DOL starters
• Reversing starters
• Star‑delta starters

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🏭 Typical Applications

• Pumps & fans
• Compressors
• Conveyors
• Machine tools
• General industrial automation

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⭐ One‑line summary

TeSys Deca thermal relays provide reliable, adjustable thermal overload protection for motors, forming compact, coordinated motor starters when paired with TeSys Deca contactors.