We ship worldwide — Singapore, Australia, Malaysia, Indonesia, Philippines, India, Middle East & more

3G Electric
RFQ CartGet a QuoteSign inSign up
EATON Overload Relay: Electronic Protection, 3 Poles, NEMA Size 1 - NEMA Electronic Overload Relays
EATONNEMA Electronic Overload Relays

EATON Overload Relay: Electronic Protection, 3 Poles, NEMA Size 1

The EATON Overload Relay is a NEMA Size 1 electronic protection device for three-phase motors, rated for a maximum voltage of 690V AC and an adjustable current range of 4 A to 20 A. It features screw clamp terminals…

SKU 3G-OTH-40617

Brand
EATON
Item
Overload Relay: Electronic Protection, 3 Poles, NEMA Size 1
Category
NEMA Electronic Overload Relays
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Local availability & support

Delivery
Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

EATON
Manufacturer Part Number
C440A1A020SF1
Phase
Three
Maximum Voltage Rating
690V AC
Thermal Units Required
Not Applicable to Electronic Type Overload Relays
Terminal Connection Type
Screw Clamp Terminals
Compatible Contactor Series
Freedom

Technical Documents

No technical documents available for this product.
Request documentation →
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

EATON Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The EATON Overload Relay is a NEMA Size 1 electronic protection device for three-phase motors, rated for a maximum voltage of 690V AC and an adjustable current range of 4 A to 20 A. It features screw clamp terminals and is compatible with the Freedom contactor series. As an electronic type, it does not require thermal units.

Frequently Asked Questions

What is the EATON C440A1A020SF1 overload relay used for?

The EATON C440A1A020SF1 is an electronic overload relay used to protect three-phase motors from overcurrent and phase loss. It is designed for NEMA Size 1 applications, with an adjustable current range of 4 A to 20 A and a maximum voltage rating of 690V AC.

What are the specifications of the EATON C440A1A020SF1 overload relay?

The EATON C440A1A020SF1 is a three-pole electronic overload relay with screw clamp terminals, rated for 690V AC maximum. It is compatible with the Freedom contactor series and does not require thermal units. The adjustable current range is 4 A to 20 A.

Where to buy the EATON C440A1A020SF1 overload relay worldwide?

3G Electric supplies the EATON C440A1A020SF1 overload relay to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this NEMA Size 1 electronic protection device.

How to select the correct EATON overload relay for a motor?

To select the correct EATON overload relay, match the full-load current of your three-phase motor to the relay's adjustable range (4 A to 20 A for the C440A1A020SF1). Ensure the relay's voltage rating (690V AC) and NEMA size (Size 1) are compatible with your contactor and system.

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 nema electronic overload relays. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion →Pumps & Compressors →Spare Parts →All Products →

Compatible alternatives & equivalents

Cross-referenced by specification & description
EATON Overload Relay: Electronic Protection, 3 Poles, NEMA Size 0/00/1/1-3/4/2/2-1/2/3, 4 A – 20 A (MPN C440A1A020SAX)
EATON
EATON Overload Relay: Electronic Protection, 3 Poles, NEMA Size 0/00/1/1-3/4/2/2-1/2/3, 4 A – 20 A (MPN C440A1A020SAX)
EATON Overload Relay: Electronic Protection, 3 Poles, NEMA Size 0, 4 A – 20 A (MPN C440A1A020SF0)
EATON
EATON Overload Relay: Electronic Protection, 3 Poles, NEMA Size 0, 4 A – 20 A (MPN C440A1A020SF0)
EATON Overload Relay: Electronic Protection, 3 Poles, NEMA Size 2, 9 A – 45 A (MPN C440A1A045SF2)
EATON
EATON Overload Relay: Electronic Protection, 3 Poles, NEMA Size 2, 9 A – 45 A (MPN C440A1A045SF2)
EATON Overload Relay: Electronic Protection, 3 Poles, NEMA Size 00, 4 A – 20 A (MPN C440A1A020SF00)
EATON
EATON Overload Relay: Electronic Protection, 3 Poles, NEMA Size 00, 4 A – 20 A (MPN C440A1A020SF00)
EATON Overload Relay: Electronic Protection, 3 Poles, NEMA Size 0/00/1/1-3/4/2, 9 A – 45 A (MPN C440A1A045SAX)
EATON
EATON Overload Relay: Electronic Protection, 3 Poles, NEMA Size 0/00/1/1-3/4/2, 9 A – 45 A (MPN C440A1A045SAX)
EATON Overload Relay: Electronic Protection, 3 Poles, NEMA Size 4, 28 A – 140 A (MPN C440C1A140SF4)
EATON
EATON Overload Relay: Electronic Protection, 3 Poles, NEMA Size 4, 28 A – 140 A (MPN C440C1A140SF4)

More from EATON

View all EATON parts →
Three-pole electronic overload relay for three-phase motor protection. Rated 1 A to 5 A, maximum 690V AC. NEMA Size 0, screw clamp terminals, compatible with C25 Definite Purpose contactors. No thermal units required. Typical applications include pumps, fans, and conveyors
EATON
Three-pole electronic overload relay for three-phase motor protection. Rated 1 A to 5 A, maximum 690V AC. NEMA Size 0, screw clamp terminals, compatible with C25 Definite Purpose contactors. No thermal units required. Typical applications include pumps, fans, and conveyors
Three-pole NEMA Size 3 electronic overload relay rated for 20 A to 100 A at 690V AC. Uses screw clamp terminals and requires no thermal units. Compatible with Freedom contactor series. Provides motor overload and phase loss protection in industrial three-phase systems
EATON
Three-pole NEMA Size 3 electronic overload relay rated for 20 A to 100 A at 690V AC. Uses screw clamp terminals and requires no thermal units. Compatible with Freedom contactor series. Provides motor overload and phase loss protection in industrial three-phase systems
Three-pole NEMA electronic overload relay rated for 0.33 A to 1.65 A, with a maximum voltage of 690V AC. Features screw clamp terminals and is compatible with C25 Definite Purpose contactors. No thermal units required. Used for motor overload and phase loss protection in industrial control panels and HVAC equipment
EATON
Three-pole NEMA electronic overload relay rated for 0.33 A to 1.65 A, with a maximum voltage of 690V AC. Features screw clamp terminals and is compatible with C25 Definite Purpose contactors. No thermal units required. Used for motor overload and phase loss protection in industrial control panels and HVAC equipment
EATON Overload Relay: Electronic Protection, 3 Poles, NEMA Size 0/00, 1.65 A – 33 A (MPN C440A1A1P6SAX)
EATON
EATON Overload Relay: Electronic Protection, 3 Poles, NEMA Size 0/00, 1.65 A – 33 A (MPN C440A1A1P6SAX)
EATON Overload Relay: Electronic Protection, 3 Poles, NEMA Size 4/5/6/7/8/9, 20 A – 100 A (MPN C440B2A100SAX)
EATON
EATON Overload Relay: Electronic Protection, 3 Poles, NEMA Size 4/5/6/7/8/9, 20 A – 100 A (MPN C440B2A100SAX)
EATON Overload Relay: Electronic Protection, 3 Poles, NEMA Size 0/00/1/1-3/4/2/2-1/2/3/5/6/7/8/9 (MPN C440A1A005SAX)
EATON
EATON Overload Relay: Electronic Protection, 3 Poles, NEMA Size 0/00/1/1-3/4/2/2-1/2/3/5/6/7/8/9 (MPN C440A1A005SAX)
EATON Overload Relay: Electronic Protection, 3 Poles, NEMA Size 1, 9 A – 45 A (MPN C440A1A045SF1)
EATON
EATON Overload Relay: Electronic Protection, 3 Poles, NEMA Size 1, 9 A – 45 A (MPN C440A1A045SF1)
EATON Overload Relay: Electronic Protection, 3 Poles, NEMA Size 00, 1 A – 5 A (MPN C440A1A005SF00)
EATON
EATON Overload Relay: Electronic Protection, 3 Poles, NEMA Size 00, 1 A – 5 A (MPN C440A1A005SF00)