MRK Slim Series Screw Connection Rail Terminal Blocks
Onka offer great value fully encapsulated DIN rail terminals. The Slim series saves on component space where room in control panels is limited.
There is no need to purchase additional end plates, each terminal has an embedded end plate. Slim Series 4mm terminal is only 5.9mm wide!
Available individually or in bulk saving box of 100.
Suitable for:
- 35 x 7.5mm DIN Rail (Top Hat Rail)
- 35 x 15mm DIN Rail (Top Hat Rail)
- Matches Old Onka Part Number 0912
Simple Cross Connection Method
Cross connections or commoning can be achieved using simple push in bridges. The cross connector strips can be cut down to link the correct number of terminals. This 4.0mm terminal requires the 2.5mm bridge due to its compact size.
Technical Data
| Body | PA6.6 |
| Bridge | Copper |
| Contact | CK45 Steel |
| Screw | Steel |
| Temperature | -40°C,+140°C |
| Cable Strip L. | 10mm |
| Torque | 0,4Nm |
| Data | TSE/CE |
| Voltage | 750V |
| Current | 32A |
| Section | 4mm² |
| Norm | EN-60947-7-1 |
| Dimensions (mm) | |
| A | 40 |
| B | 40 |
| C | 34.5 |
| D | 36.5 |
| E | 5.9 |
Alternative to Weidmuller WDU 4 1020100000 (screw connection)
Alternative to Wago TopJob S 2204-1201 (push-in connection)
Frequently Asked Questions
What cable size does this terminal accept?
4.0mm² solid or ferruled conductors, 10mm strip length, rated 32A at 750V.
Why does it need the 2.5mm bridge instead of a 4.0mm bridge?
The Slim body is only 5.9mm wide, matching the pitch of the 2.5mm push-fit bridge rather than the wider standard 4.0mm bridge.
Do I need any tools to wire it?
Yes — this is a screw connection terminal, tightened to 0.4Nm torque (unlike the OPK push-fit range).
Is this compatible with my existing Weidmuller or Wago terminals?
It's the same 4.0mm² size and rating as the Weidmuller WDU 4 (screw connection, like this one) and Wago TopJob S 2204-1201 (push-in connection).
How does this differ from the standard 4.0mm OPK push-fit terminal?
Same electrical rating, but a slimmer screw-connection design (5.9mm vs 6.6mm wide) for tighter component spacing in the panel.
Industry Applications
- Panel space-constrained builds — slimmer profile than standard screw terminals
- Control panel building — standard screw termination for heavier-gauge circuits
- OEM machine builders — cost-effective alternative to premium European brands