TeSys Deca Time Delay Auxiliary Contact Block, 1NO+1NC, 10-180s Delay
Schneider Electric

Schneider Electric LADT4 TeSys Deca Time Delay Auxiliary Contact Block, 1NO+1NC, 10-180s Delay

  • MPN: LADT4
  • PPN: SCH-LADT4

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$243.35

/ EA

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Spec sheet

Description

TeSys D time delay auxiliary contact block, for contactors LC1D, LC1F and control relays CAD. It provides 1NO+1NC contacts rated up to 10A 690V AC, On-delay setting range 10-180s, connection by screw clamp terminals. Clip-on front mounting, it procures high reliability and durability. Multi standards certified (IEC, UL, CSA, CCC, EAC), Green Premium compliant (RoHs/Reach).

Features

  • Custom-designed to integrate time-delayed operations directly into control logic, this mechanical auxiliary block provides an accurate On-Delay timing function. When the hosting device is energized, the module delays its state transition for a user-specified duration, making it ideal for managing staggered motor startups, conveyor sequencing, and simple industrial automation cycles without needing a standalone electronic timing relay.
  • Belonging to the premium TeSys Deca (formerly TeSys D) ecosystem, this block mounts smoothly onto the front-face track of standard 3-pole and 4-pole TeSys Deca contactors (such as the LC1D09 through LC1D95 series) as well as CAD control relays. It utilizes a simple, tool-free snap-on mechanism that locks securely onto the contactor's moving carrier without modifying the base footprint or requiring external mounting space.
  • This timer features a built-in rotary dial on the front face that allows operators to easily dial in an On-Delay window spanning 10 to 180 seconds. The internal pneumatic mechanism relies on regulated air displacement rather than delicate solid-state circuitry, ensuring reliable, repeatable delay performance that remains unaffected by electrical noise or voltage fluctuations across the control grid.
  • The block is configured with a 1 NO (Normally Open) + 1 NC (Normally Closed) contact set with a 1.5 ms non-overlap window to ensure both contacts never close simultaneously. The contacts feature a thermal current rating of up to 10 A and a maximum insulation rating of 690 V AC conforming to IEC 60947-5-1, allowing them to easily pilot command loops, status indicators, PLC inputs, and secondary interlock coils.
  • Equipped with multi-standard screw clamp terminals, this block accepts flexible or solid copper wiring up to 2.5 mm² and can be torqued down cleanly with Flat, Philips No. 2, or Pozidriv No. 2 screwdrivers. It carries an IP20 finger-safe environmental protection rating and satisfies strict international safety regulation. This includes UL, CSA, and CE listings. This ensures your assembled control panels pass rigorous municipal and facility field inspections.

Documentation & Downloads

Specifications

Additional

Rated Operational Current
10 A at 690 V AC
Rated Making Capacity
140 A AC, 250 A DC at 694690 V
Minimum Switching Current
5 mA
Timer Type
On delay
Time Delay Range
10-180 s
Tightening Torque
1.7 N.m
Connections
Screw clamp terminals 1-2.5 mmb2 flexible or rigid, with or without cable end
Operating Temperature Range
-40 to 70 60470 0C
Insulation Voltage
690 V IEC 60947-5-1, 600 V UL 60947-5-1, 600 V CSA C22.2 No 60947-5-1
Standards Compliance
IEC 60947-5-1, EN/IEC 60947-5-1, GB/T 14048.5, UL, CSA, CCC, EAC, UKCA
Operating Altitude
3000 m
Rated Operational Voltage690 V AC 25-400 Hz
Permissible Short-Time Rating100 A (1 s), 120 A (500 ms), 140 A (100 ms) at 60 60460 0C
Minimum Switching Voltage17 V
Contact Composition1 NO + 1 NC
Mechanical Durability5 million cycles
Mounting LocationFront
Dimensions (H x W x D)48 mm x 44 mm x 61 mm (1.89 in x 1.73 in x 2.40 in)
Storage Temperature Range-60 to 80 60480 0C
IP Degree of ProtectionIP20 IEC 60529
Product CertificationsIECEE CB Scheme, UL, CSA, CCC, EAC, UKCA
ColorDark grey

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