The Schneider Electric LADR4 is a time‑delay auxiliary contact block designed as an accessory for TeSys D and TeSys F contactors and control relays. It provides off‑delay timing functionality to auxiliary contacts, allowing a controlled delay between the de‑energization of the contactor coil and the change of auxiliary contacts.
Specifications
General
Product Type: Time delay auxiliary contact block
Series / Family: TeSys D accessory
Model: LADR4
Contact Configuration: 1 × Normally Open (NO) + 1 × Normally Closed (NC)
Time Function: Off‑delay (contacts operate after coil is de‑energized)
Time Delay Range: Adjustable from 10 to 180 seconds
Mounting: Front clip‑on mounting onto compatible contactors
Connection Type: Screw clamp terminals
Electrical Ratings
Rated Operational Voltage (Ue): Up to 690 V AC (25 – 400 Hz)
Rated Insulation Voltage (Ui): Typically 690 V AC (IEC)
Conventional Free‑Air Thermal Current (Ith): 10 A at 60 °C for control circuit
Utilization Category: AC‑15 / DC‑13 (control circuits)
Rated Contact Current: Up to 10 A at 690 V AC
Maximum Switching Voltage: Up to 250 V depending on utilization
Minimum Switching Current: ~5 mA
Minimum Switching Voltage: ~17 V
Protection, Durability & Compliance
Mechanical Durability: Up to 5 million operations
Electrical Durability: ~100,000 operations at rated load
Protection Class: IP20 (front face)
Standards Compliance: IEC 60947‑5‑1, UL 60947‑5‑1, CSA C22.2 No. 60947‑5‑1, CE, CSA, CCC, EAC, RoHS/REACH
Operating Temperature: Approximately ‑20 °C to +60 °C
Storage Temperature: ~‑60 °C to +80 °C
Physical & Mechanical
Compact Design: Minimal panel space required
Compatibility: Designed for use with Schneider TeSys D / TeSys F contactors and control relays (e.g., LC1D, LC1F series)
Front Mounting: Clip‑on installation on the contactor frame