Obsolete Industrial Relays

TDBE4, dual function timer relay

This relay is obsolete from January 1, 2023


Plug-in industrial electronic timer relay with delay-on and delay-off function and three change-over contacts and one normally-closed contact. The delay times are independently adjustable with two lockable knobs. The relay can also be supplied with one or two fixed delay times (one knob or none). The relay needs an auxiliary supply and can be activated with an external N/O contact or with AC or DC supply voltage.
The relay is equipped with two LEDs which indicate the presence of power supply and the energizing of the coil. Optionally equipped with magnetic arc blow-out for high breaking capacity and long contact life.
The construction of the relay and choice of materials makes the TDBE4 relay suitable to withstand low and high temperatures, shock & vibrating and dry to humid environments.
No external retaining clip needed as integrated ‘snap-lock’ will hold relay into socket under all circumstances and mounting directions. Compact design, choice of many options and a wide range of sockets makes the TDBE4 relay an easy and flexible solution to use.


These relay series are designed for demanding industrial applications. The TDBE4 is used in applications where a delay on pull-in and on drop-out is


• Time delay relay with auxiliary supply
• Delay on pull-in and on drop-out
• 3 C/O contacts and 1 N/C contact
• Both delay times independently
adjustable with 2 lockable knobs
• Also available with 1 or 2 fixed time
delays (1 knob or none)
• Total time delay range: 0 s...120 min
• Optional magnetic arc blow-out
• Two LEDs for status indication
• Suitable for AC or DC voltage
• Flat, square and silver plated relay pins
for excellent socket connection
• Integrated snap lock
• Optional positive mechanical keying
relay to socket


• Proven reliable
• Long term availability
• Easy to maintain
• Low life cycle cost

Industrial compliancy

• IEC 61812-1 Time relays for industrial
and residential use
• IEC 60947 Low voltage switch gear
and control gear
• IEC 60947-5-1 Electromechanical
control circuit devices and switching
• IEC 60255 Relay design and
environmental conditions
• EMC Directive
• CE


Product information request

Railway rolling stock
Railway signalling