Timer Relays

WDB4-U200N One-shot Timer Relay with ON Delay

Summary

Description

Plug-in electronic railway one-shot timer relay with time delay on pull-in, three change-over contacts and one normally-closed contact for reliable switching of very low currents (1 mA @5 VDC) up to currents of 10A @ 110VDC.

Application

The WDB4-U200N is used in applications where one pulse at output is necessary after activating the relay (with or without time delay).  

Features

  • Auxiliary power supply necessary
  • Compact plug-in design
  • 3 C/O contacts and 1 N/C contact
  • Both delay-on time and pulse time are independently adjustable with 2 lockable knobs
  • Also, available with 1 or 2 fixed times (1 knob or none)
  • Total time delay range: 0 s...120 min
  • Magnetic arc blow-out ensuring long contact life
  • Two LEDs for status indication, red or green
  • Integrated back EMF suppression diode
  • Minimum switching current, 1 mA
  • Maximum continuous current 10 A
  • Wide temperature range  -40 ⁰C...+70 ⁰C
  • Mechanical life > 30 million operations
  • Electrical life e.g. > 10 million operations at 0.5 A, 24 VDC
  • Data matrix code with serial number for traceability
  • Integrated snap lock, no external retaining clip needed
  • Transparent cover for visual inspection
  • Many options and sockets available

Railway compliance

  • EN 50155 : 2017 Railway applications - Rolling stock - Electronic equipment
  • IEC 60571: 2012 Railway applications - Electronic equipment used on rolling stock
  • IEC 60947-5-1: 2016 / IEC 60947-5-4: 2012 Low-voltage switch gear and control gear
  • IEC 61373: 2010 Railway applications - Rolling stock equipment - Shock and vibration tests
  • EN 50121-3-2: 2016 Railway applications - Electromagnetic compatibility
  • NF F16-101/102 Railway rolling stock - Fire behavior
  • EN 45545-2: 2020 Railway applications - Fire protection on railway vehicles
    Part 2: Requirements for fire behavior of materials and components

Certifications

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Available versions

Type Nominal voltage (VDC)
WDB4-U201N 24
WDB4-U207N 36
WDB4-U202N 48
WDB4-U203N 72
WDB4-U205N 96
WDB4-U204N 110
Other voltages on request
 

Product information request

Railway rolling stock
Railway signalling
Industry
Energy
Instruments
Maritime
Yes
Yes