Model LDT Leak/Over Temperature Detection Relay

The Model LDT Leak/Over-Temperature Detection Relay is engineered to protect critical equipment such as submersible pumps from failure by monitoring two key fault conditions: seal leakage and stator over-temperature. It utilises a resistance-based leak detection input (adjustable sensitivity from ~1 kΩ to ~35 kΩ) as well as a normally-closed temperature switch on the stator to trigger alarms when predefined thresholds are crossed. Visual LED indicators show normal operation (green) and fault conditions (red) for immediate status feedback. Designed for surface mounting, the unit maintains its relay state during power loss (for the over-temperature channel) and requires a manual reset, ensuring that faults cannot be inadvertently cleared.

Key Features:

Adjustable leak detection sensitivity range (~1 kΩ to ~35 kΩ)

Dual-channel protection: leak detection + stator over-temperature

LED status indication for easy monitoring

Surface-mount housing for straightforward installation

Relay latching behaviour on temperature fault ensures safe recovery