IWISS SN-05B Crimper Tool 0.5mm - 1.0mm
Terms and Conditions
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An IWISS SN-05B ratcheting crimp tool for MC4 solar connectors on smaller conductors, covering 0.5 to 1.5 mm² conductors.
A crimp is a gas tight cold weld, or it is nothing. Taken to full compression with the right die, the terminal and the conductor deform into one piece of metal with no air between them, and the joint outlives the cable. Done with pliers, it is a mechanical grip that looks identical, passes a tug test, and fails eighteen months later once moisture has found its way in. Signal circuits are where this hurts most, because the currents are too small to reveal a poor joint until it becomes an intermittent fault that takes a day to find.
The ratchet is the feature, not a convenience. It will not release until the crimp has reached full compression, so every terminal comes out the same regardless of who squeezed the handles, and regardless of how many hundreds into a loom you are.
Terminal families that look alike often need different dies. This one is for MC4 contacts on the smaller conductor sizes. For MC4 on 2.5, 4 and 6 mm², the SN-2546B is the tool.
Key specifications
| Manufacturer part | IWISS SN-05B |
|---|---|
| Type | Ratcheting crimp tool |
| Suits terminals | MC4 connectors |
| Capacity | 0.5 to 1.5 mm² |
| Wire gauge | AWG 20 to 14 |
| Length | 190 mm |
| Handle | Nylon, ergonomic |
| Weight | 0.4 kg |
Features
- Ratcheting action that will not release until the crimp is complete
- Correct die profile for MC4 solar connectors on smaller conductors
- Repeatable results across a whole loom, not just a careful first few
- Nylon handles, sized for repeated use rather than occasional
Compatibility
For MC4 connectors on 0.5 to 1.5 mm² conductors.
It is specific to MC4 on small conductors. For heavier MC4 work use the SN-2546B, and for battery cable lugs from 4 to 70 mm² use a hydraulic crimper with hex dies.
Check a test crimp before you do a batch. Crimp one, cut through it, and look: a correct crimp shows solid metal with no visible voids and the insulation grip closed separately from the conductor grip. It takes two minutes and saves remaking a loom.
In the box
- 1 x IWISS SN-05B crimp tool
Downloads
No document is published for this tool. For the die profile or the terminals it suits, contact us.