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EATON Overload Relay: 3 Poles, 2NO/2NC, 20 A – 100 A Adj Range - Definite Purpose Electronic Overload Relays
EATONDefinite Purpose Electronic Overload Relays

EATON Overload Relay: 3 Poles, 2NO/2NC, 20 A – 100 A Adj Range

The EATON Definite Purpose Electronic Overload Relay (MPN C440B1A100SDF) is a 3-pole device with 2NO/2NC contacts and an adjustable current range of 20 A to 100 A. It offers selectable Trip Class 10/20/30, providing…

SKU 3G-OTH-40340

Brand
EATON
Item
Overload Relay: 3 Poles, 2NO/2NC, 20 A – 100 A Adj Range
Category
Definite Purpose Electronic Overload Relays
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Technical Specifications

EATON
Manufacturer Part Number
C440B1A100SDF
Type
2NO/2NC, 20 A – 100 A Adj Range
Trip Class
10/20/30
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EATON Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The EATON Definite Purpose Electronic Overload Relay (MPN C440B1A100SDF) is a 3-pole device with 2NO/2NC contacts and an adjustable current range of 20 A to 100 A. It offers selectable Trip Class 10/20/30, providing flexible motor protection for industrial applications.

Frequently Asked Questions

What is the EATON C440 overload relay used for?

The EATON C440B1A100SDF is a definite-purpose electronic overload relay used to protect three-phase motors from overload, phase loss, and phase imbalance in industrial automation, HVAC, pumping, and conveyor systems.

What are the specifications of the EATON C440 overload relay?

The EATON C440B1A100SDF is a 3-pole electronic overload relay with 2NO/2NC auxiliary contacts, an adjustable current range of 20 A to 100 A, and selectable trip classes 10, 20, and 30. It is designed for definite-purpose motor protection.

Where to buy the EATON C440 overload relay worldwide?

3G Electric supplies the EATON C440B1A100SDF overload relay worldwide. As a global industrial distributor, we handle full logistics, customs clearance, and delivery to your site. Contact us for availability and lead time.

How to select the trip class for the EATON C440 overload relay?

Select trip class 10 for fast-acting protection on submersible pumps or compressors, class 20 for standard motor starting, and class 30 for high-inertia loads like fans or centrifuges. The EATON C440B1A100SDF allows field selection via a rotary switch.

Used in

Common applications for EATON
Industrial control panels — Eaton M22 flush push buttons for momentary machine start/stop commands
Motor control centers — Eaton NEMA reversing starters with electronic overloads for conveyor belt direction control
HVAC systems — Eaton definite purpose starters with thermal overloads for compressor and fan motor protection
Process automation — Eaton SL7 tower lights with IP66 bases for visual status indication in wet environments
Machine tool signaling — Eaton 10250T LED pilot lights with push-to-test for operator panel status lamps
Access control — Eaton M22 keyed selector switches for equipment mode selection in secured areas

EATON Products

3G Electric supplies EATON definite purpose electronic overload relays. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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