Product Overview
Cal Test CT3134-0 In-Line 4mm Banana Jack - 1000V CAT III, 36A, Dual Set-Screw Termination
Condition
Unused NOS. Inspected and ready to deploy. Condition is clean and pristine with nothing out of the ordinary. Three-piece assembly intact: black polypropylene insulator sleeves and nickel-plated brass contact with two allen-head set screws present. CE mark molded on grip body. Sourced from a government research facility.
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Product Overview
Cal Test Electronics CT3134-0 is a 4mm sheathed in-line banana jack built for assembling and repairing test leads without a soldering iron. The three-piece modular design accepts up to 12 AWG conductor wire and clamps it securely using dual allen-head set screws - no soldering required. Made in France. Rated 1000V CAT III and 36A continuous, with a fully recessed polypropylene shroud that covers the brass contact and meets IEC safety requirements for high-voltage test work.
Key Features
- Connector type: 4mm banana jack (female), fully insulated and sheathed
- Termination: solderless dual set-screw mechanical clamp, requires 1.5mm hex wrench
- Voltage rating: 1000V CAT III
- Current rating: 36A maximum continuous
- Wire accommodation: conductor up to 12 AWG (2.5mm max conductor diameter)
- Insulation clearance: accepts wire jacket up to 4.0mm outer diameter
- Contact material: nickel-plated brass
- Insulation material: polypropylene (PP)
- Temperature range: -20°C to +80°C
- Color: black; CE mark molded on grip body
- Country of origin: France
Applications
- Building a custom-length test lead on the bench when stock leads do not reach - strip the wire, insert, tighten two screws, done
- Repairing a damaged test lead in the field without a soldering iron or rework station nearby
- Adding a banana jack termination to a heavy power supply cable for load-bank testing at 36A
- Creating adapter cables for vintage multimeters or bench instruments with non-standard lead lengths
- Hobbyist use: building custom breadboard power leads or instrumentation cables for personal lab setups
Frequently Asked Questions
What tool do I need to assemble this?
A 1.5mm hex (allen) wrench to tighten the dual set screws. The wrench is not included.
Does the 1000V CAT III rating apply to the connector alone?
The connector itself is rated 1000V CAT III. That rating applies to the full assembly only when the lead wire used is equally rated for 1000V CAT III service.
What is the largest wire this will accept?
Conductor up to 12 AWG (2.5mm conductor diameter). Wire jacket outer diameter up to 4.0mm.
Is this the solderless version or the solder version?
This is the solderless version, CT3134-0. The solder version carries the part number CT3134-S-0 and is a separate item.
What color is this connector?
Black. The "-0" suffix in the Cal Test part numbering indicates black.
A connector made in France with a 1000V CAT III rating and dual set screws does not leave much room for improvising - it was built for the tech who needs the lead right and needs it now, not after a soldering session.
