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3M M4-12R/SK Non-Insulated Ring Terminal - Non-Insulated Ring Terminals
3MNon-Insulated Ring Terminals

3M M4-12R/SK Non-Insulated Ring Terminal

The 3M Ring Terminal: Bare (MPN M4-12R/SK) is a non-insulated ring terminal rated for 1,000 V, featuring a brazed barrel and seam. It accommodates a 1/2 in stud size and 4 AWG wire sizes, supplied by 3M.

SKU 3G-OTH-20200

Also listed as: M412RSK · M4 12R SK · M4-12R-SK

Brand
3M
Item
M4-12R/SK Non-Insulated Ring Terminal
Part Number
M4-12R/SK
Category
Non-Insulated Ring Terminals
Available to Order
Also known as:M4-12R/SK3M
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Local availability & support

Delivery
Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

3M
Manufacturer Part Number
M4-12R/SK
Type
1,000 V, Brazed Barrel & Seam
Stud Size
1/2 in
Wire Sizes
4 AWG to 4 AWG

Technical Documents

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3M Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The 3M Ring Terminal: Bare (MPN M4-12R/SK) is a non-insulated ring terminal rated for 1,000 V, featuring a brazed barrel and seam. It accommodates a 1/2 in stud size and 4 AWG wire sizes, supplied by 3M.

Frequently Asked Questions

What is the 3M M4-12R/SK ring terminal used for?

The 3M M4-12R/SK is a non-insulated ring terminal used for high-current electrical connections in industrial power distribution, control panels, and heavy equipment. It accommodates 4 AWG wire and a 1/2 in stud, rated up to 1,000 V, with a brazed barrel and seam for reliable conductivity.

What are the specifications of the 3M M4-12R/SK ring terminal?

The 3M M4-12R/SK is a bare, non-insulated ring terminal with a 1/2 in stud size, accepting 4 AWG to 4 AWG wire. It is rated for 1,000 V and features a brazed barrel and seam. The manufacturer part number is M4-12R/SK, and it is part of 3M's ring terminal line.

Where to buy 3M M4-12R/SK ring terminals worldwide?

3G Electric supplies the 3M M4-12R/SK ring terminal worldwide. As a global industrial distributor since 1990, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time; we source and deliver this 3M terminal globally.

How to install a 3M M4-12R/SK ring terminal?

To install the 3M M4-12R/SK, strip 4 AWG wire to the recommended length, insert into the brazed barrel, and crimp using a tool matched to the terminal size. Ensure the 1/2 in stud hole aligns with the connection point. Follow standard electrical safety practices for high-voltage terminations.

Used in

Common applications for 3M
Industrial process water filtration — 3M solid polypropylene cartridge (e.g., RT10Q16G20NN, 7 micron) for sediment removal in manufacturing lines.
Cooling tower pre-treatment — 3M string-wound cartridge (e.g., RT39B16G20NN, 30 micron) to protect heat exchangers from particulate fouling.
Food and beverage rinse water — 3M 1 micron solid cartridge (RT10Y16G20NN) for fine filtration to meet quality standards.
Chemical processing feed water — 3M 27 micron solid cartridge (RT30L16G20NN) for high-flow sediment reduction upstream of sensitive equipment.
Wastewater effluent polishing — 3M 2 micron string-wound cartridge (RT09Y16G20NN) for final particulate removal before discharge or reuse.
Pharmaceutical utility water — 3M 0 micron string-wound cartridge (RT09L16G20NN) for sub-micron filtration in critical systems.
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3M Products

3G Electric supplies 3M non-insulated ring terminals. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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