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MARRETTE NO 1 SET SCREW BOX/25
Manufacturer Resources
Product Specs
- Idea Granular Category Code Igcc :
- 4543 >> Wire connectors
- Product Group:
- Electrical Boxes
- Product Type:
- Set-Screw Vibration Proof / Visible Connection
- Selling Unit Of Measure:
- each
- Standards:
- UL E9809, CSA 6591
- Temperature Range:
- 302 °F150 °C
- Voltage Rating:
- 600 V
- Wire Size:
- 18-12 AWG
- Department:
- Electrical
- Product Subgroup:
- Electrical Boxes
- Product Color:
- Black
- Installation Category:
- Twist-On
- Product Material:
- Thermoplastic Polymer
Thomas & Betts 1SHB – Frequently Asked Questions
1) What wire sizes does the Thomas & Betts 1SHB Marrette connector handle?
The Marrette No. 1 (model 1SHB) is rated for 18 to 12 AWG conductors. That covers typical branch circuit work in 14 and 12 AWG plus smaller control and fixture leads down to 18 AWG. If you are splicing 10 AWG or larger, you need a bigger connector.
2) Is the Marrette 1SHB a twist-on wire nut or a set screw connector?
Both, in effect. The 1SHB installs twist-on style over the conductors, and it uses a set screw to clamp the splice so the connection stays tight under vibration and stays visible for inspection. That is the difference from a plain spring-insert wire nut: the screw holds mechanically rather than relying on a spring cone.
3) Is the Thomas & Betts 1SHB UL listed and CSA approved for Canadian jobs?
It carries UL file E9809 and CSA 6591, so it is accepted on both US and Canadian installations. That matters for inspection on institutional and municipal work where both marks get checked.
4) Will this wire connector hold up inside a hot luminaire or an equipment enclosure?
The Marrette No. 1 is rated to 302 F (150 C), which puts it in range for splices inside fixture canopies, ballast compartments and warm equipment enclosures. The shell is a thermoplastic polymer, black in color.
5) Why use a set screw connector instead of a standard spring wire nut on motor or HVAC wiring?
Vibration is the reason. A spring-cone wire nut can loosen where there is constant mechanical movement, such as motor terminations, rooftop units and pump controls. The 1SHB clamps the conductors with a set screw, which is why it is classed as a vibration proof, visible connection type. For ordinary static branch wiring in a junction box, a standard twist-on is usually enough.
6) Is the Marrette No 1 sold by the box of 25 or as single pieces?
The 1SHB is the Marrette No. 1 set screw connector packaged as a box of 25. Ordering is by the each, with each unit being that 25-piece box.
7) How many conductors can I put in one Marrette 1SHB?
Combination counts are governed by the marking on the Thomas & Betts package, not by a single number. What is fixed is the conductor range: 18 through 12 AWG, at up to 600 volts. Build your splice within that range and follow the fill combinations printed on the box of 25.
How fast can I get the Thomas & Betts 1SHB delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
continental
U.S.
Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit,
reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Thomas & Betts 1SHB come with a warranty?
Absolutely. The Thomas & Betts 1SHB is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Thomas & Betts 1SHB?
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selection,
installation tips, and troubleshooting. Contact Us
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