Square D Type S Replacement Co...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$196.43
Square D Type S Replacement Coil, NEMA Size 2, 220/240VAC

Square D Type S Replacement Coil, NEMA Size 2, 220/240VAC

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Model: 3106340947

In Stock (leaves warehouse same day if ordered before 3pm ET)

$196.43
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Square D Type S Replacement Coil, NEMA Size 2, 220/240VAC

The Square D Type S replacement coil lets you re-coil a Type S contactor or starter instead of replacing the entire unit, converting it to a different control circuit voltage or restoring it after a coil failure. This coil is rated 220/240 VAC 50/60 Hz, sized for NEMA Size 2 applications, and is used in an 8502SD contactor, an 8536SD starter, or an 8903SP lighting contactor covering 2 or 3 pole configurations. Fully encapsulated and fitted with screw clamp connections, it is built as a direct-fit maintenance part for existing NEMA motor control equipment.

Key Features

  • Voltage Rating: Rated 220/240 VAC 50/60 Hz for standard NEMA control circuit applications.
  • NEMA Size 2 Compatibility: Designed as a replacement coil for 8502SD contactors, 8536SD starters, and 8903SP lighting contactors, 2 or 3 pole.
  • Inrush & Sealed Consumption: Inrush power of 311 VA with an average sealed consumption of 37 VA for reliable coil pull-in and holding performance.
  • Compact Dimensions: Coil measures 66.2 mm in height, 101.1 mm in width, and 61.7 mm in depth for a precise fit in the original device.
  • Fully Encapsulated Construction: Coil is fully encapsulated to protect internal windings from dust, moisture, and mechanical damage.
  • Screw Clamp Connections: Simplifies wiring during coil replacement or voltage conversion without special tooling.
  • Cost-Effective Repair: Swapping the coil restores the contactor or starter to service without the cost of a full replacement unit.

Technical Specifications

  • Warranty: 18 months
  • Nema Size: 2

Typical Applications

  • NEMA Motor Starter and Contactor Maintenance
  • Control Circuit Voltage Conversion
  • Industrial Motor Control Panels
  • Commercial Lighting Contactor Systems
  • Replacement Parts for 8502SD, 8536SD, and 8903SP Devices

Why Square D?

Square D engineers this replacement coil as a precise fit for its own 8502SD, 8536SD, and 8903SP NEMA contactors and starters, so electrical maintenance teams can restore equipment quickly and confidently. The fully encapsulated design and screw clamp connections support dependable, code-compliant performance for professional motor control and lighting circuit work, backed by an 18 month warranty.

Manufacturer Resources

Spec Sheet

Product Specs

Product Type:
Coil
Voltage Rating:
220/240VAC
Configuration:
NEMA Size 2
Department:
Electrical
Product Group:
Wiring Devices
Product Subgroup:
Circuit Breakers

Square D 3106340947 – Frequently Asked Questions

1) Will this Square D Type S coil fit my 8536SD size 2 starter?
Yes. The Square D Type S replacement coil, part 3106340947, is built for NEMA Size 2 Type S equipment, specifically the 8502SD contactor, the 8536SD starter, and the 8903SP lighting contactor in 2 or 3 pole configurations. It drops into the original device as a maintenance part, so you re-coil the starter rather than replacing the whole unit.
2) Can I use this coil to convert a Type S starter from 120V control to 240V control?
That is one of its intended uses. This Type S coil is rated 220/240 VAC 50/60 Hz, so swapping it into a Size 2 Type S contactor or starter changes the control circuit voltage to 240V class. Confirm your control transformer or control power source actually supplies 220/240 VAC before you make the change, since the coil will not pull in reliably on a lower control voltage.
3) What VA does this Square D Size 2 coil draw, and will my control transformer handle it?
Inrush is 311 VA with an average sealed consumption of 37 VA. Size the control transformer on the inrush figure, not the holding figure: a transformer picked only for 37 VA will sag on pull-in and the contactor may chatter or fail to seat. If other coils, relays, or pilot devices share the same control transformer, add their inrush to the 311 VA.
4) Can an Eaton Freedom series coil be used to repair a Square D 8536SD Size 2 starter?
No. The Square D Type S coil 3106340947 is built as a direct-fit part for Square D 8502SD contactors, 8536SD starters, and 8903SP lighting contactors in NEMA Size 2, and it is dimensioned to drop into those magnet assemblies. The Eaton 9-2876 is a Freedom series replacement coil rated 120/110V at 60/50 Hz, and the Eaton 9-2875 is a motor control coil for Freedom NEMA Size 00 and IEC A-C contactors. Coils are matched to the manufacturer's own magnet frame and size, so an Eaton Freedom coil is not a repair part for a Square D Type S device.
5) I need a 240V coil but my starter is an Eaton, not a Square D. What should I order?
The Square D Type S coil 3106340947 is rated 220/240VAC 50/60 Hz but is sized for Square D NEMA Size 2 Type S devices only. For Eaton control gear at that voltage, the Eaton 9-1989 is a D26 relay replacement coil rated 240V 60Hz. Match the coil to the device family you actually have: D26 relay for the Eaton coil, 8502SD/8536SD/8903SP for the Square D coil.
6) Does the coil run on 50 Hz for equipment built to export spec?
It is rated 50/60 Hz, so the same coil works on 50 Hz control power as well as 60 Hz at 220/240 VAC. That matters on machinery panels built for both domestic and export service.
7) What are the dimensions of this Square D Type S coil?
The coil measures 66.2 mm high, 101.1 mm wide and 61.7 mm deep. Those are the figures to check against the coil you are pulling out if you are unsure which NEMA size frame you have in front of you, since a Size 1 or Size 3 coil will not seat in a Size 2 magnet frame.
8) Will this Size 2 coil work in a 3-pole lighting contactor as well as a motor starter?
Yes. It covers both 2 and 3 pole configurations across the Type S range, including the 8903SP lighting contactor, the 8502SD contactor, and the 8536SD starter, as long as the device is NEMA Size 2 and the control circuit is 220/240 VAC.
9) What is the difference between the Square D Type S Size 2 coil and the Eaton GCA 530 coil?
They serve different frames and different control voltages. The Square D 3106340947 is a NEMA Size 2 Type S coil rated 220/240VAC 50/60 Hz for 8502SD contactors, 8536SD starters, and 8903SP lighting contactors. The Eaton 2050A14G09 is a Type GCA 530 replacement coil for NEMA Size 5 equipment rated 200V/208V 60Hz. Size 5 gear carries a much larger magnet assembly than Size 2, so the two are not interchangeable in either direction.
10) My contactor is a small Size 00 unit. Is the Square D Type S coil the right replacement?
No. The Square D 3106340947 coil is a NEMA Size 2 part for 8502SD, 8536SD, and 8903SP devices. For a Size 00 opening on Eaton gear, the Eaton 9-2875 motor control coil covers Freedom NEMA Size 00 and IEC A-C contactors. Confirm both the device brand and the NEMA size stamped on the starter before ordering a coil.
11) What kind of terminations does the coil use, and do I need special tools to swap it?
Screw clamp connections, so the control wiring lands with a screwdriver. No crimping or special tooling is needed for the coil itself. De-energize and lock out the control circuit and the power circuit before opening the starter.
12) Is this coil sealed well enough for a dusty or damp plant environment?
The windings are fully encapsulated, which protects them from dust, moisture, and mechanical damage. That is the construction you want in a machine shop, wash-down adjacent area, or an outdoor lighting contactor enclosure where the starter itself is providing the main environmental protection.
How fast can I get the Square D 3106340947 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 Square D 3106340947 come with a warranty?
Absolutely. The Square D 3106340947 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 Square D 3106340947?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Square D 3106340947 from ZenSupply?
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