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Electronic overload relay · 20-100A · 55 mm separate mount · selectable Class 10/20/30 · Eaton C440B1· 00SAX
SKU: EAT-C440B1A100SAX
Electronic overload relay for motor protection in industrial control panels, with a 20-100A adjustable overload range, 55 mm frame, and separate-mount design. Selectable Class 10A, 20, and 30 trip settings plus auto/manual reset help match motor starting characteristics and service requirements.
What this product is for
The Eaton C440B1A100SAX is an electronic overload relay used to protect motors from overload conditions in industrial and commercial motor control assemblies. It is a separate-mount unit for applications requiring a 55 mm frame relay with an adjustable 20-100A setting range.
Use for
- Motor starter and contactor assemblies
- Pumps, fans, conveyors, and other motor loads within the relay's adjustment range
- Panels where selectable trip class is needed to suit motor starting conditions
- Applications requiring selectable automatic or manual reset
Avoid for
- Loads above 100A full-load current
- Applications needing an overload relay with built-in communications unless the required accessory modules are added
- Installations where the mounting format does not match a 55 mm separate-mount relay
Best for
Best for electricians and panel builders replacing or specifying an Eaton C440 electronic overload relay where the motor full-load current falls within 20-100A and trip class selection matters. This style is commonly chosen when matching overload protection to motor acceleration time is important.
Installed in
Typically installed in industrial control panels, MCC-style assemblies, machinery panels, and commercial motor control systems. Overall dimensions are approximately 4.13 in H x 5.52 in L x 2.21 in W (105 x 140 x 56 mm).
Why this product exists
This relay provides adjustable electronic motor overload protection in a compact standalone format, helping reduce motor damage from sustained overcurrent. Selectable Class 10A, 20, and 30 trip settings give more setup flexibility than fixed-trip overloads.
Compared with similar products
Compared with fixed-trip or narrower-range overload relays, this model covers a broad 20-100A range and offers selectable trip class plus selectable auto/manual reset. That can simplify stocking for service work when the required Eaton C440 frame and mounting style are already specified.
Specifications
- Brand: Eaton
- Manufacturer part number: C440B1A100SAX
- Product family: C440 electronic overload relay
- Type: Electronic overload relay
- Mounting style: Separate mount
- Frame size: 55 mm (2.17 in)
- Overload adjustment range: 20-100A
- Trip class: Selectable Class 10A, 20, 30
- Reset: Selectable automatic/manual
- Special feature: Standard
- Certifications: CSA Certified, UL Listed, CE Marked
- Approximate dimensions: 4.13 in x 5.52 in x 2.21 in (105 x 140 x 56 mm)
- MountingSeparate mount
- Frame Size55 mm (2.17 in)
- Trip ClassSelectable Class 10A, 20, 30
- Dimensions4.13 in x 5.52 in x 2.21 in (105 x 140 x 56 mm)
- Product FamilyC440 electronic overload relay
- ApprovalsCSA Certified, UL Listed, CE Marked
- ResetSelectable automatic/manual
- Special FeatureStandard
- Overload Adjustment Range20-100A
- BrandsEaton
- Stock in Elmira1
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