IP20 Unipolar Battery Cable Quick Connectors SP15/45 SP75 SP120 SP180, 600V

Rebuilding a Battery Lead One Pole at a Time

When a cable is damaged near the lug, the cheapest repair is often a new connector on the same lead rather than a new lead assembly. The SP unipolar series covers 15/45A, 75A, 120A and 180A at 600V with a PC110U shell and T2 silver-plated terminal, UL, ROHS and CE approved, IP20 guarded.

Specifications

The Repair Case for a Single-Pole Plug

A bipolar connector has to be replaced as a unit, because both poles share one body. A unipolar plug lets a workshop replace only the damaged pole, reuse the sound cable and keep the other lead untouched — which is often the difference between a repair and a rewire.

It also means the spare parts bin holds single bodies rather than complete pairs.

• Replace one pole without touching the other lead
• Four ratings from 15/45A to 180A at 600V
• PC110U shell, T2 silver-plated terminal
• UL, ROHS and CE approved, IP20

Matching Plug to Cable

Each rating in the series is intended for a different cable range, and the terminal is sized accordingly. A 180A body crimped onto a light cable adds cost without benefit; a 45A body on a traction lead becomes the hottest point in the circuit.

Where a workshop stocks several ratings, colour coding keeps them separable at a glance, and the shells are visually consistent enough that a technician recognises the series immediately.

Installation and Inspection

Crimp with the matched die, pull-test before closing the shell, and check that the cable entry is not under strain once the plug is mounted. On single-pole systems, confirm polarity marking at the same time: a plug that can go on either lead depends on the marking being legible.

Stock units ship in three to five working days; tailored builds in five to seven days after payment; samples can be produced to drawing.

Cable Range and Crimping

Each rating in the series is matched to a cable range, and the terminal is sized accordingly. Use the crimp die specified for the terminal rather than a generic one, pull-test every joint, and confirm the cable entry is not under strain when the plug is mounted.

When a Unipolar Plug Is the Wrong Choice

For drivers swapping batteries several times a shift, a bipolar body is the safer choice: polarity is fixed and both leads move as one. Unipolar plugs earn their place in fixed routing, bulkhead passages and workshop repairs.

Spares for a Workshop

A small stock of the two ratings a site actually uses covers most repairs, and single bodies take less shelf space than complete pairs. Because the shells share a family look, a technician can identify the rating quickly even when the packaging is long gone.

Ordering Quantities

Unipolar connectors are ordered per pole, so a two-lead repair needs two bodies of the same rating unless only one side is damaged. Stock ships in three to five working days; custom colours and tailored builds in five to seven days after payment.

Polarity Marking on Single-Pole Systems

With one pole per body, nothing in the hardware prevents a positive lead being fitted with a plug that was intended for the negative side. Marking is therefore part of the installation, not an optional extra: colour, a cable label, or both, applied at the time the plug is fitted and checked whenever a lead is re-terminated.

Tooling to Keep on the Van

The dies matched to each rating, a cable cutter, a pull-test gauge and a handful of single bodies cover most roadside repairs. Because unipolar plugs do not require a matched pair, a van can carry one rating in quantity rather than complete sets in three sizes.

Crimp Quality Decides the Joint

Most warm connectors on unipolar leads are warm because of the crimp, not the contact. A die that is one size out, or a cable stripped to the wrong length, produces a joint that looks finished and behaves badly. Pull-testing every termination before the shell is closed takes seconds and catches the majority of these faults at the bench rather than at the charger.

Mixing Ratings on One Machine

Some installations use different ratings on the same truck, for example a heavy traction lead and a lighter auxiliary circuit. Keeping the shells visually distinct, by size and by colour, prevents a plug being fitted to the wrong cable during a hurried repair.

Frequently asked questions

Can I buy a single pole rather than a pair?
Yes, each body is a single-pole connector, so poles are ordered individually.

What ratings exist?
15/45A, 75A, 120A and 180A at 600V.

What material is the shell?
PC110U, with a T2 silver-plated terminal, IP20 guarded.

Which approvals?
UL, ROHS and CE.