Square D CC Series Thermal Ove...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$48.47
Square D CC Series Thermal Overload Unit, Melting Alloy, Class 20

Square D CC Series Thermal Overload Unit, Melting Alloy, Class 20

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Model: CC50.1

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

$48.47
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Square D CC Series Thermal Overload Unit, Melting Alloy, Class 20

The Square D CC Series thermal overload unit (Type S, Type CC) is a melting-alloy thermal element engineered to protect motors, controllers, and branch-circuit conductors against excessive heating caused by prolonged motor over-currents, up to and including locked rotor currents. This family is offered across seven model selections — CC1120, CC1210, CC1560, CC501, CC594, CC815, and CC940 — each sized to match specific overload relay and starter configurations while sharing the same Class 20 Motor Tripping Class and 600V maximum voltage rating. Manufactured by Schneider Electric, the CC Series is designed for dependable, code-conscious motor branch-circuit protection across NEMA Sizes 00-7 in commercial and industrial applications. Whichever model is selected from the range, the thermal unit delivers consistent melting-alloy overload sensing built to Square D's manufacturing standards.

Key Features

  • Melting Alloy Thermal Element: Type S, Type CC construction uses a melting alloy design to sense sustained motor over-current and protect against excessive heating.
  • Class 20 Trip Rating: Motor Tripping Class 20 delivers a standard trip response suited to typical motor overload protection applications across every model in the CC Series lineup.
  • 600V Maximum Rating: Rated for use up to 600V maximum, matching standard industrial and commercial motor control circuits.
  • Broad NEMA Compatibility: Available in NEMA Sizes 00-7 to switch electric motors with a variety of overload relays and starter configurations.
  • Seven Model Selections: Choose from CC1120, CC1210, CC1560, CC501, CC594, CC815, or CC940 to match the specific overload relay or starter application.
  • Multiple Trip Speed Options: The CC Series thermal unit lineup is available in standard, quick, and slow trip versions to match application requirements.
  • Simple Catalog Ordering: A simple catalog number structure supports easy, fast ordering and replacement.
  • Compatible Accessory: Works with the 9065SDO12 accessory for expanded application flexibility.

Technical Specifications

  • Series: CC
  • Motor Tripping Class: 20
  • Thermal Overload Type: Melting Alloy
  • Range of Product: CC
  • Warranty Period: 18 months
  • Country of Origin: Mexico

Typical Applications

  • Motor Overload Protection in Industrial Motor Starters
  • Commercial and Industrial Electrical Installations
  • Branch-Circuit Conductor Protection for Motor Circuits
  • Motor Control Center (MCC) Assemblies
  • Panelbuilder and OEM Motor Starter Assemblies

Why Square D?

Square D CC Series thermal units combine a proven melting alloy design with a Class 20 trip rating to deliver consistent, dependable motor overload protection across NEMA Sizes 00-7 and the full CC1120, CC1210, CC1560, CC501, CC594, CC815, and CC940 model range. Backed by an 18-month warranty and manufactured by Schneider Electric, this thermal unit is built for reliable, code-compliant performance in panelbuilder, OEM, and industrial motor control applications.

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Manufacturer Resources

Product Specs

Product Type:
Overload Heater Element
Series:
CC
Voltage Rating:
600V
Grade:
Class 20
Department:
Electrical
Product Group:
Motor Control & Automation
Product Subgroup:
Overload Relays

Square D CC50.1 – Frequently Asked Questions

1) How do I know which Square D CC thermal unit to order for my starter?
The CC Series thermal unit is selected by catalog number, not by horsepower. Seven selections are offered: CC1120, CC1210, CC1560, CC501, CC594, CC815 and CC940, each sized to match a specific overload relay or starter configuration. The number corresponds to the thermal element sizing on the Square D selection table for your starter size and motor full-load current, so pull the thermal unit number called out for that starter rather than picking by motor rating alone. All seven share the same Class 20 trip class and 600V maximum rating.
2) Will a Square D CC thermal unit work in a NEMA Size 2 motor starter?
Yes. The CC Series melting-alloy thermal units cover NEMA Sizes 00 through 7, so a Size 2 starter is within range. Which of the seven catalog numbers you need depends on the overload relay and the motor current for that starter, since each thermal unit is sized to a specific relay and starter combination.
3) What does Class 20 mean on a melting alloy overload unit, and is it right for my motor?
Class 20 means the overload will trip within 20 seconds at locked-rotor current (six times full load). That is the standard middle-ground response: it rides through normal starting inrush on most general-purpose motors but still protects the windings against sustained overcurrent. Every CC Series thermal unit is Class 20. If your motor needs a faster trip (Class 10, common on hermetic or submersible motors) or a longer accelerating time (Class 30, high-inertia loads), a CC unit is not the element to use.
4) Can Square D CC thermal units be used on a 480V three-phase motor circuit?
Yes. The CC Series thermal unit is rated to 600V maximum, so 208, 240, 480 and 600V motor control circuits are all within rating.
5) I need to match the part number on an old Square D thermal unit, which has a decimal in it. Is CC112.0 the same as CC1120?
Same part. Square D prints these thermal unit numbers with a decimal, so the manufacturer part numbers read CC112.0, CC121.0, CC156.0, CC50.1, CC59.4, CC81.5 and CC94.0. Those correspond to the CC1120, CC1210, CC1560, CC501, CC594, CC815 and CC940 selections. Match the digits on the stamped element, decimal included, and you have the right unit.
6) How is a melting alloy thermal unit different from a bimetallic overload relay?
A melting-alloy element like the CC Series (Type S, Type CC) uses a solder pot that softens under sustained overcurrent heat, letting a ratchet turn and trip the contacts. It will not reset until the alloy cools and re-solidifies, which gives you an inherent hand-reset delay and no chance of a motor cycling itself back on prematurely. Bimetallic relays, by contrast, can be field-set to automatic reset and are usually adjustable over a current band. If your application needs automatic reset or a dial-adjustable trip point, choose a bimetallic or solid-state relay instead; the melting-alloy unit is a fixed, non-adjustable element matched by catalog number.
7) What exactly does a CC thermal overload unit protect against?
It protects the motor, the controller, and the branch-circuit conductors from excessive heating caused by prolonged motor overcurrent, up to and including locked-rotor current. It is not a short-circuit device. You still need the fuses or circuit breaker ahead of the starter for short-circuit and ground-fault protection.
8) Do CC Series thermal units come in quick-trip or slow-trip versions?
The CC thermal unit lineup is offered in standard, quick and slow trip versions. The seven selections carried here, CC1120 through CC940, are the Class 20 standard-response elements. If your starter was originally built with a quick-trip or slow-trip element, match the original catalog number rather than substituting a standard unit, because the trip characteristic is built into the element and cannot be adjusted in the field.
9) Can I stock one CC thermal unit as a spare for every starter in my motor control center?
No. Thermal units are current-specific, so a single catalog number only covers the starters whose overload relay and motor current it was sized for. Stocking spares for an MCC means keeping the particular CC numbers your starters actually use. Record the number stamped on each installed element (CC1120, CC1210, CC1560, CC501, CC594, CC815 or CC940) during a walkdown and stock to that list.
10) Is there an accessory that goes with the Square D CC thermal unit?
The CC Series thermal unit works with the 9065SDO12 accessory. The thermal unit itself is just the sensing element, so it installs into an existing Square D overload relay or starter; the relay and starter are separate items.
11) Are these Square D overload elements made by Schneider Electric, and where?
Yes, the CC Series thermal units are manufactured by Schneider Electric under the Square D brand, with country of origin Mexico. That matters for buyers who have to document origin on government, institutional or utility procurement.
How fast can I get the Square D CC50.1 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 CC50.1 come with a warranty?
Absolutely. The Square D CC50.1 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 CC50.1?
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
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