The Schneider Electric LRD4365 is a TeSys Deca (LRD) differential thermal overload relay with an adjustment range of 80 … 104 A, Class 10A, for direct mounting under TeSys Deca contactors.
The relay measures the motor current with bimetal elements and trips the contactor when the motor is overloaded or when a phase is lost (differential design). It has a red stop button and a blue reset button on the front.
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Technical data
| Schneider reference | LRD4365 |
|---|---|
| Product or component type | Differential thermal overload relay |
| Relay application | Motor protection |
| Product compatibility | LC1D115; LC1D150 |
| Network type | AC; DC |
| Thermal overload class | Class 10A conforming to IEC 60947-4-1 |
| Thermal protection adjustment range | 80 … 104 A |
| [Ui] rated insulation voltage | Power circuit: 1000 V conforming to IEC 60947-4-1; Power circuit: 600 V conforming to CSA; Power circuit: 600 V conforming to UL |
| Network frequency | 0…400 Hz |
| Mounting support | Plate, with specific accessories; Rail, with specific accessories; Under contactor |
| Tripping threshold | 1.14 +/- 0.06 Ir conforming to IEC 60947-4-1 |
| Auxiliary contact composition | 1 NO + 1 NC |
| [Ith] conventional free air thermal current | 5 A for signalling circuit |
| Permissible current | 0.06 A at 440 V DC-13 for signalling circuit; 0.12 A at 600 V AC-15 for signalling circuit |
| [Ue] rated operational voltage | 1000 V AC 0…400 Hz for power circuit conforming to IEC 60947-4-1 |
| Associated fuse rating | 4 A gG for signalling circuit; 4 A BS for signalling circuit |
| [Uimp] rated impulse withstand voltage | 6 kV conforming to IEC 60947-1 |
| Phase failure sensitivity | Tripping current 130 % of Ir on two phase, the last one at 0 |
| Control type | Red push-button: stop; Blue push-button: reset |
| Temperature compensation | -20 … 60 °C |
| Connections – terminals | Power circuit: screw clamp terminals 1 cable(s) 4 … 35 mm² flexible with cable end |
| Condition | New, original Schneider Electric |
Key characteristics (per Schneider)
- thermal overload relays
- TeSys Deca
- 80…104A
- class 10A
- lug clamps
Typical applications
- Protection of motors with rated current 80 … 104 A
- Star-delta starters (set to 0.58 x motor current)
- Motor starters with TeSys Deca LC1D contactors
- Pumps, fans and conveyors
Compatibility and replacement
For separate mounting on a rail or plate Schneider offers a terminal block adapter (LAD7B106 for LRD01-35). If the motor current is near the top of the range, use the next range up so the setting sits mid-scale.
Frequently asked questions
Does it detect phase loss?
Yes. Schneider gives the phase failure sensitivity as: Tripping current 130 % of Ir on two phase, the last one at 0.
Which contactors does it fit?
Per Schneider: LC1D115, LC1D150.
What current range does it cover?
80 … 104 A, set on the front dial.
Can it be mounted separately from the contactor?
Yes, with the Schneider terminal block adapter for independent mounting on a rail or plate.
Do you ship to my country, and what is the warranty?
Yes. RendatSP ships worldwide from Yiwu, China, by air in 5 to 7 days once the part is ready, and every part carries a 1-year warranty. Send the order number and quantity on WhatsApp and we will reply with a quotation.
How to order
Message us the order number and quantity. For breakdowns, tell us the delivery address and we will offer the fastest shipping option. If the exact part is discontinued, we confirm the official successor before quoting.
Need it fast? Send the order number, quantity and delivery country on WhatsApp or through the inquiry form and we reply with a quotation the same working day. All parts are new and original, covered by a 1-year warranty, and ship worldwide by air in 5 to 7 days once ready (shipping, payment and warranty). Local agents: Saudi Arabia, Iraq, the UAE, Egypt, Oman, Libya, Morocco, Mauritania, Yemen, Algeria and Jordan.
