Instantaneous plug-in Auxiliary power relays

Instantaneous power relays from Mors Smitt are designed for demanding applications such as power utilities, petro chemical industries and mining. The construction of the relay and choice of materials makes these power relays suitable to withstand corrosive atmospheres, low and high temperatures, vibration, in heavy duty environments.

We offer the following power relay series for heavy duty applications;

D series, heavy duty, power relays

The D relays series are avaialble with up to 8 change over contacts (dpdt) no external retaining clip is needed due to an integrated ‘snap-lock’ that will keep the relay in its socket under all circumstances and mounting positions.

A wide variety of models and features are available to cover the most demanding applications.

CU series, heavy duty, miniature power relays

The CU-series miniature power relays can be used in both AC and DC voltage networks. These power relays are able to switch resistive and also inductive loads, depending on the options included. We offer instantaneous relays and safety/critical relay models.

A400 & B400 series, heavy duty, power relays

The A400 and B400 relay series are designed for safety and/or critical applications. These power relays are standard equipped with double-make double-break contacts. The B400 relay series is also standard equipped with weld no transfer contacts (optional for the A400).

  • CU-A series, miniature instantaneous relays

    CU-A relays, 1C/O + 1 N/O (weld no transfer), 6A, AC coil Heavy duty miniature power relays for demanding applications, switching of AC&DC voltages, resistive and/or inductive loads. Equipped with weld no transfer contacts. Plug in (CU) or PCB (CP) Miniature power relay 1C/O + 1 N/O contact AC coil Coil voltages 24...180VAC Flash barriers Cadmium free contacts Equipped with keying
  • CU-B series, miniature instantaneous relays

    CU-B relays, 2 C/O, 6A Heavy duty miniature power relays for demanding applications, switching of AC&DC voltages, resistive and/or inductive loads. Integrated magnetc arc blow-out function. Plug in (CU) or PCB (CP) Miniature power relay 2 C/O contacts DC coil Coil voltages 6...110VDC Magnetic arc blow-out (option B) Flash barriers Cadmium free contacts Equipped with keying
  • CU-C series, miniature instantaneous relays

    CU-C relays, 2 C/O, 6A Heavy duty miniature power relays for demanding applications, switching of AC&DC voltages, resistive and/or inductive loads. Integrated magnetic arc blow-out function. Plug in (CU) or PCB (CP) Miniature power relay 2 C/O contacts AC coil Coil voltages 24...240VAC Magnetic arc blow-out (option B) Flash barriers Cadmium free contacts Equipped with keying
  • CU-D series, miniature instantaneous relays

    CU-D relays, 1C/O + 1 N/O (weld no transfer), 6A, DC coil Heavy duty miniature power relays for demanding applications, switching of AC&DC voltages, resistive and/or inductive loads. Equippedwith weld no transfer contacts. Plug in (CU) or PCB (CP) Miniature power relay 1C/O + 1 N/O contact DC coil Coil voltages 6...48VDC Flash barriers Cadmium free contacts Equipped with keying
  • CU-G series, miniature instantaneous relays

    CU-G relays, 2 C/O, 6A, DC coil Heavy duty miniature power relays for demanding applications, switching of AC&DC voltages, resistive and/or inductive loads. Plug in (CU) or PCB (CP) Miniature power relay 2 C/O contacts DC coil Coil voltages 5...93VDC Flash barriers Cadmium free contacts Equipped with keying
  • CU-U series, safety critical miniature relays

    CU-U relays, 1 DM-DB contact, 6A, DC coil The CU-U is a so called safety relay which is used in places where a safe separation between coil and contact circuit is required. The relay is, with the corresponding screw socket V12, according to CEE 15/2e edition, approved by KEMA, for application in gas fired installations.  Equipped with 1 double interrupting change-over contact and also available as print relay: CP-U. Plug in (CU) or…
  • CU-V series, safety critical miniature relays

    CU-V relays, 1 DM-DB contact, 6A, AC coil The CU-V is a so called safety relay which is used in places where a safe separation between coil and contact circuit is required. The relay is, with the corresponding screw socket V12, according to CEE 15/2e edition, approved by KEMA, for application in gas fired installations. Equipped with 1 double interrupting change-over contact and also available as print relay: CP-U. Plug in (CU) or PCB (CP)…
  • CU-W series, miniature instantaneous relays

    CU-W relays, 2 C/O, 6A, AC coil Heavy duty miniature power relays for demanding applications, switching of AC&DC voltages, resistive and/or inductive loads. Plug in (CU) or PCB (CP) Miniature power relay 2 C/O contacts AC coil Coil voltages 24...240VAC Flash barriers Cadmium free contacts Equipped with keying
  • D series, instantaneous power relays

    D relays, 4 C/O, 10A Heavy duty relays for demanding applications, switching of AC&DC voltages, resistive and/or inductive loads. Plug-in power relay Smitt-style pinning 4 C/O contacts Rated load 1 A /110 VDC1 , 10A/230 VAC1 Coil voltages 12...350 VDC, 12...440 VAC AC & DC coil (DC coil standard with back EMF diode) LED indicator Integrated 'snap-lock' retaining clip Dimensions 40 x 40 x 53 mm See the datasheet in the download section for all…
  • D-B series, high DC breaking capacity relays

    D-B relays, 4C/O, up to 7A/110V DC1 Heavy duty relays for demanding applications. Integrated magnetic arc blow-out function for higher DC breaking capacity. Plug in relay Smitt-style pinning 4 C/O contacts Rated load 7A /110V DC1 , 10A/230V AC1 Coil voltages 12...350VDC, 12...440VAC AC&DC coil, DC with standard back EMF diode LED indicator Integrated 'snap-lock' retaining clip Magnetic arc blow-out (option B) Dimensions 40 x 40 x 53 mm
  • D-BV relay – High DC breaking capacity, 4 C/O, 10 A

    Rugged plug-in relays for extreme reliable, long endurance applications in harsh environment. Proven reliable operation in switching high DC voltage / inductive loads and low currents. Compact design, choice of many options and a wide range of sockets makes the D-BV relay an easy and flexible solution to use.
  • D-BW safety relay, 4 contacts, 10A

    The D-relays series are designed for demanding industrial applications such as power utilities and petrochemical industries. The construction of the relay and choice of materials makes the D-relay suitable to withstand corrosive atmosphere, low and high temperatures and vibrating environments. (more…)
  • D-BX5 series, high DC breaking capacity (10A) relays

    D-BX5 relays, 2NO + 2NC, up to 10A/110V DC1 Heavy duty relays for demanding applications. Integrated magnetic arc blow-out function and contact gap 2mm for higher DC breaking capacity. Plug in relay Smitt-style pinning 2NO + 2NC contacts Rated load 10A /110V DC1 , 10A/230V AC1 Coil voltages 12...220VDC, 12...380VAC AC&DC coil, DC with standard back EMF diode LED indicator Integrated 'snap-lock' retaining clip Magnetic arc blow-out (option B) Contact…
  • D-BYX5 series, high DC breaking capacity (12A) relays

    D-BYX5 relays, 1 DM-DB, up to 12A/110V DC1 Heavy duty relays for demanding applications. Integrated magnetic arc blow-out function and contact gap 4mm for higher DC breaking capacity. Plug in relay Smitt-style pinning 1 double make double break contact (option Y, standard) Rated load 12A /110V DC1 , 10A/230V AC1 Coil voltages 12...220 VDC, 12...380 VAC AC&DC coil, DC with standard back EMF diode Dimensions 40 x 40 x 53…
  • D-E series, low current switching relay

    D relays, 4 C/O, 10A Heavy duty relays for demanding applications, suitable for low current switching, equipped with gold plated contacts. Plug-in power relay Smitt-style pinning 4 C/O contacts, gold plated Rated load 1A /110V DC1 , 10A/230V AC1 Coil voltages 12...350VDC, 12...440VAC AC&DC coil (DC coil standard with back EMF diode) LED indicator Integrated 'snap-lock' retaining clip Dimensions 40 x 40 x 53 mm
  • D-YB series, high DC breaking capacity (8A) relays

    D-YB relays, 2 DM-DB contacts, up to 8A/110V DC1 Heavy duty relays for demanding applications. Integrated magnetic arc blow-out function and double make - double break contacts for higher DC breaking capacity. Plug in relay Smitt-style pinning 2 double make double break contacts Rated load 8A /110V DC1 , 10A/230V AC1 Coil voltages 12...220VDC, 12...380VAC AC&DC coil, DC with standard back EMF diode LED indicator Integrated 'snap-lock' retaining clip Magnetic arc blow-out (option B)…