Din Terminals


The term covers all conceivable types, designs and forms of connector. From the point of view of application, the most important group of terminals is that of the rail mounted modular DIN-terminal blocks.

From the standard, screw clamp single feed through connectors of our ER range, through multi connections, fuse, disconnect and sensor terminals to our high current, high insulation terminals rated for PV applications, IMO have a terminal for every application and of course the accessories to suit.

We are very pleased to announce the newest addition to our already comprehensive range.

PUSH-FIT terminals are designed to meet vibration frequencies of up to 2kHz at a displacement of 20mm and an acceleration of 20g. Rated up to 800V/57A with wiring capabilities to 16mm2 for solid strand cables on single connection standard and earth terminals, PUSH FIT terminals offer an effective, labour saving alternative to the standard ER range.

All IMO terminals are made as standard of carefully selected materials. Insulating materials, clamping metals and conducting metals are subjected to strict quality control as required by stringent international standards.

  • The current carrying bar must be made of metals which reduce electrical losses to a minimum.
  • Insulation materials must be non-flammable and self-extinguishing.
  • The screw must not become loose due to vibration.
  • The current carrying bar must have such a form that the conductor has a strong contact area in the connection point.

IMO Clamping yokes and screws are zinc plated which considerably increases the resistance to corrosion. Current bars are made out of brass / electrolytic cooper. Coating of tin/lead oxide, nickel while ensuring surface protection guarantees very low contact resistance.

Engineering Thermoplastic Polyamide 6.6 has excellent electrical, mechanical and chemical characteristics even at temperatures as high as 100oC and contains no cadmium based colour pigments. Polyamide 6.6 moulded housing absorbs humidity from its surroundings. This makes the plastic material elastic and fracture proof even at temperatures as low as -40oC. Being a self- extinguishing material it is difficult to ignite and burns only as long as there is a supporting flame. It is rated V2 according to UL94. Good ageing resistance and insensitivity to ultraviolet light makes it suitable for tropical and open air applications. IMO has recently made great investment to attain ATEX approval (EX II 2GD Ex e II) for our Type ER range of feed-through, DIN rail terminals, and also for three sizes of our ERPE DIN rail earth terminals, making both types suitable for operation in potentially explosive atmospheres 94/9/EC.

IMO DIN Terminal Product Range – in brief

The ER Series – Standard Screw Clamp Terminals

Our most established and compreshensive range of Screw Clamp DIN rail mounted terminals are easy to use, robust and reliable units. They comprise a pair of single pole, feed through terminal assemblies that are mounted into moulded insulation housing.

SC Series - Spring Clamp Terminals

Spring clamp terminals spring clamp is operated by using a screw driver to provide an access point to wire through the opening in the spring clamp. The wire end gets clamped onto the current bar on removal of screw driver. SC type spring clamp terminals decrease the mounting and revision costs relative to screw type terminals. Interlocking mechanism on the plastic housing prevents terminal blocks being separated from each other when the cables are connected.

PF Series – PUSH FIT Terminals

A realistic alternative to terminal blocks with screw or spring clamp connection and a true time saver. The PUSH FIT clamp is designed to open and accept the wire without the need of a screwdriver. As the wire is pushed into the cavity, the clamp is opened to accept the wire which is then held in place by the force of the clamp.

T15 Series - Mini Terminals for TS 15 Rails

Screw Clamp terminals are designed specifically to fit in small spaces. These terminals providing 2.5 mm2 and 4 mm2 cable connections are mounted on TS 15mm x 5.5mm mounting rails. Both cross sections have the same dimensions and a common end plate that can be used for the whole range.

ERB Series - High Current Bolt-on Terminals

ERB (Bolt-On) type rail mounted terminal blocks are developed to have safe connections of high current carrying conductors. In this type of rail terminals, cable connection is done by cable lugs connected to the tips of the conductor. Isolation cover is designed for cable lugs having different dimensions. Cross connection up to 4poles is available and due to its universal structure, it is possible to mount ERB on MR 32 & MR 35 rails. A fixing screw is also available to maintain a more secure mounting on the DIN rail.

ER(PV) Series Terminals

Designed with the solar industry in mind, IMO PV rated terminals are made using UL94V-0 materials and are 1000V rated up to 175A, with wiring capabilities from 4mm2 to 95mm2.

ERF Series - Fuse Terminals

Certain electrical and control systems require protection by fuses and in response, IMO offers fuse terminals with built in safety fuse links. The terminal has a moving type hinged carrier that has a specially designed space for cartridge type glass fuse of size Ø5x20 or Ø5x25 together with a possibility of a spare one. The fuse can be engaged or disengaged by the movement or the replacement of the carrier in ERF 3M and ERF3 type products respectively. Marking/identification by marking tags is possible on both terminal and fuse carrier. A specially designed built-in circuit gives light indication in event of fuse blow out.


Whichever series of IMO terminals you choose, it is supported by a full range of accessories, including end plates in matching colours, cross connectors, test plugs, a full selection of marking options and all held together on IMO DIN rail and either the screw-clamp or screw-less end stops.