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ABB Motor Overload Relay for Industrial Motor Control Panels and Starters
The ABB Motor Overload Relay is engineered to provide dependable motor overload protection within industrial and commercial electrical control systems. As part of ABB's lineup of motor control and protection components, this overload relay helps safeguard connected motor loads from damage caused by sustained overcurrent conditions, supporting long-term reliability of motor starters and control panels. Each unit is supplied packaged 1 EA for straightforward stocking and ordering, and government procurement compliance details — including American Recovery and Reinvestment Act (ARRA) and Buy American Act (BAA) status — are available directly from the manufacturer upon request. ZenSupply offers this ABB overload relay for contractors, panel builders, and facility teams sourcing reliable motor protection components for industrial motor control applications.
Key Features
- Overload Protection Function: Operates as a motor overload relay, helping protect connected motor loads from damaging sustained overcurrent conditions in control panel and motor starter applications.
- Packaging: Supplied 1 EA, simplifying ordering, stocking, and inventory management for contractors, panel builders, and MRO buyers.
- ARRA Compliance Documentation: American Recovery and Reinvestment Act compliance status is available by contacting the manufacturer directly, supporting government and public-sector project requirements.
- BAA Compliance Documentation: Buy American Act compliance status is available by contacting the manufacturer directly, supporting domestic-sourcing procurement requirements on qualifying projects.
- ABB Manufacturing Standards: Backed by ABB, a globally recognized manufacturer of electrical control, protection, and automation components used across industrial and commercial facilities.
- Procurement-Ready Documentation: Manufacturer-verified compliance information helps streamline specification and approval on projects with government or public-sector sourcing requirements.
Technical Specifications
- Refer to manufacturer documentation for complete technical specifications.
Typical Applications
- Motor Control Centers and Motor Starters
- Industrial Control Panels
- Commercial and Industrial Electrical Installations
- Motor Overload Protection Circuits
- Government and Public-Sector Projects Requiring ARRA/BAA Documentation
- Facility Maintenance and Replacement Parts Stocking
Why ABB?
ABB is a globally recognized manufacturer of electrical control and protection components relied on across industrial, commercial, and institutional electrical systems. Specifying an ABB Motor Overload Relay means working with a manufacturer that maintains established sourcing and compliance documentation practices, including ARRA and BAA information available on request for qualifying projects. ZenSupply stocks ABB components to help contractors, panel builders, and facility teams source reliable, well-documented electrical products for their motor control and protection installations, backed by manufacturer support for procurement and compliance questions.
Manufacturer Resources
Product Specs
- Product Type:
- Overload Relay
- Department:
- Electrical
- Product Group:
- Wiring Devices
- Product Subgroup:
- Motor Starters & Contactors
ABB CR324D310A1 – Frequently Asked Questions
1) What is ABB part number CR324D310A1?
CR324D310A1 is an ABB motor overload relay, used in motor starters and industrial control panels to protect a connected motor from sustained overcurrent. It is sold as a single unit, one each per package, so ordering quantity 1 gets you one relay and nothing else.
2) Does the ABB CR324D310A1 overload relay come with a contactor, or do I order that separately?
It is the overload relay only. The CR324D310A1 is a protection component that goes into a starter or control panel assembly, so the contactor, enclosure, and any control wiring are separate line items on your order.
3) I need a replacement overload relay for a motor starter. How do I know the ABB CR324D310A1 is the right one?
Match it by part number. Overload relays are sized to the motor full load amps and to the contactor they mount on, so the safe approach on a replacement is to read the part number off the relay you are pulling out. If the existing unit is a CR324D310A1, this is the direct match. If it is a different ABB CR324 number, that is a different current range or mounting and you want that number instead.
4) Is ARRA and Buy American Act documentation available for the ABB CR324D310A1 relay?
ABB provides ARRA (American Recovery and Reinvestment Act) and BAA (Buy American Act) compliance status for this relay on request directly from the manufacturer. If you are bidding a government or public-sector job that needs domestic-sourcing paperwork in the submittal, that is the route to the documentation.
5) What else could I use instead of an ABB overload relay for three-phase motor protection?
Two Square D options cover the same job. The TeSys LRD electronic overload relay is built for three-phase motor protection, and the TeSys Deca thermal overload relay is a Class 10A unit rated to 690V AC. Both are thermal or electronic overloads that mount to their own matching TeSys contactor line, so switching brands means matching the relay to a contactor from the same family rather than dropping it onto an existing ABB starter.
6) Electronic or thermal overload relay, which should I spec for a motor starter?
Thermal overloads use bimetallic elements that heat with current and trip on a fixed curve. They are the simpler and more common choice for general-purpose motor starters, and the Square D TeSys Deca Class 10A is that type. Electronic overloads give a wider adjustment range and tighter trip accuracy, which matters on motors with long starts or where you want one unit to cover a broader FLA band; the Square D TeSys LRD is the electronic option. Either way the relay has to pair with the contactor family it was built for.
7) What should I use instead of the ABB CR324D310A1 if I want an electronic overload relay rather than a thermal one?
Look at the Square D TeSys LRD electronic overload relay for 3-phase motor protection. It is the electronic-sensing style of the same device class, while the ABB CR324D310A1 is catalogued simply as a motor overload relay for control panels and starters. Electronic units are generally selected where a wider adjustable current range or tighter trip repeatability is wanted on a 3-phase load. As with any overload relay change, verify the mounting and terminal arrangement against the contactor already in the starter.
8) For a public-sector job that needs Buy American documentation, is the ABB relay or a Square D TeSys unit the better starting point?
The ABB CR324D310A1 has ARRA and Buy American Act compliance status available from the manufacturer on request, which is the document package a government or public-sector submittal typically asks for. The Square D comparables are the TeSys LRD electronic relay and the TeSys Deca Class 10A thermal relay; if the specification calls out a Square D contactor family, request the equivalent compliance letter from that manufacturer before ordering. Either way, get the letter in hand before the submittal deadline.
9) Can I stock the ABB CR324D310A1 as an MRO spare for our plant motor control centers?
That is one of the normal uses for it. The relay is sold one per package, which keeps shelf counts clean for a facility stockroom, and it applies to motor control centers, motor starters, and industrial control panels. If you are standardizing spares across a plant, pull the part numbers off the relays actually installed in your MCC buckets, since a single facility often runs several current ranges within the same series.
How fast can I get the ABB CR324D310A1 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
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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 ABB CR324D310A1 come with a warranty?
Absolutely. The ABB CR324D310A1 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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