OPK Series Push In Connection Rail Terminal Blocks
Onka manufacture great value fully encapsulated DIN rail terminals. The OPK Series offer unrivalled performance in push fit cable termination. This 4.0mm² version is rated 32A (CE) / 26A (UL), suited to slightly heavier-gauge circuits than the 2.5mm² size.
Available individually or in bulk saving box of 100.
- No need to purchase additional end plates - terminal has an embedded end plate
- Terminals are symmetrical - does not matter which way around they are mounted
- Accepts solid conductors or crimped ferrules - lock into place without tools
- Save time and drive down costs with fast installation and simplified accessories
Suitable for:
- 35 x 7.5mm DIN Rail (Top Hat Rail)
- 35 x 15mm DIN Rail (Top Hat Rail)
- Matches Old Onka Part Number 1512
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 uses the 4.0mm 10-way cross connection bridge.
Technical Data
| Body | PA6.6 | |
| Bridge | Copper | |
| Spring | Stainless Steel | |
| Temperature | -40°C,+140°C | |
| Cable Strip L. | 9mm | |
| Data | TSE/CE | UL |
| Voltage | 750V | 600V |
| Current | 32A | 26A |
| Section | 4,0mm² | 10AWG |
| Norm | EN-60947-7-1 | UL1059 |
| Dimensions (mm) | |
| A | 52 |
| B | 33 |
| C | 34.5 |
| D | 51.9 |
| E | 6.6 |
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 (10AWG under UL), 9mm strip length, rated 32A (CE) or 26A (UL).
Do I need any tools to wire it?
No — it's a push-fit design, so conductors lock in without a screwdriver.
Can I bridge several of these together?
Yes, using the 4.0mm 10-way cross connection bridge (linked above), cut down to the number of poles needed.
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) and Wago TopJob S 2204-1201 (push-in connection, like this one).
How does this compare to the 2.5mm² version?
Same terminal design, but rated for larger cable and higher current (32A vs 24A) — choose based on your circuit's cable gauge.
Industry Applications
- Control panel building — standard push-fit termination for fast panel wiring
- OEM machine builders — cost-effective alternative to premium European brands without compromising rating
- Building services/M&E contractors — heavier-gauge distribution board and control cabinet wiring