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Dark grey rectangular timer module with screw terminals

Schneider Electric

Schneider Electric LADR0 Off Delay Timer Module, 1NO/1NC, .3-3s, 690V AC

SKU CH-4ABB-0RAJ3

Off-delay timer module with one normally-open and one normally-closed contact, adjustable from 0.3 to 3 seconds and rated for 690 V AC

  • TypeIndustrial Electrical Controls & Automation
  • Colordark grey
  • Off-delay timing adjustable from 0.3 to 3 seconds
  • 1 normally open and 1 normally closed contact for flexible control
  • Rated for 690 V AC maximum voltage
  • Screw clamp terminals for secure wiring
  • Operates up to 158 °F ambient temperature

Purpose and Fit

The Schneider Electric LADR0 is an IEC off-delay timer module designed for industrial control circuits that need a brief continuation of power after a signal is removed. It suits panel builders and maintenance engineers working with TeSys Deca starters where a 0.3 to 3 second delay window matches the process requirement.

Thermals, Noise and Power

The module carries no moving parts, so it adds no audible noise to the enclosure and its own power draw is negligible in normal operation. It is rated for a maximum operating temperature of 158 degrees F, allowing installation in warm cabinets without derating the timing function.

Deciding Specification

The adjustable delay spans only .3 to 3 seconds, which fixes the module for fast-acting sequences such as motor coast-down or short safety hold-in. Applications that require longer delays, multi-range programming or voltage levels beyond 690V AC will need a different timer solution.

Highlights

  • Off-delay timing adjustable from 0.3 to 3 seconds
  • 1 normally open and 1 normally closed contact for flexible control
  • Rated for 690 V AC maximum voltage
  • Screw clamp terminals for secure wiring
  • Operates up to 158 °F ambient temperature

Specifications

BrandSCHNEIDER ELECTRIC
TypeIndustrial Electrical Controls & Automation
Colordark grey

Questions about this item

How do I mount the LADR0 on a TeSys Deca starter and which terminal screws do I tighten first?

Snap the module onto the front of a compatible TeSys Deca starter, then secure the screw-clamp terminals for the 1NO and 1NC contacts.

Will the screw-clamp terminals need periodic re-torquing or contact cleaning over time?

The screw-clamp terminals are designed for maintenance-free operation; no scheduled re-torquing or contact cleaning is required.

At what ambient temperature does the 0.3–3 s off-delay timing start to drift during continuous cycling?

Timing accuracy is rated up to the maximum operating temperature of 158 Degrees F; beyond that drift may occur.

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