Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

3G Electric
RFQ CartGet a QuoteSign inSign up
EATON Combination Motor Starter: 3 Poles, Circuit Breaker, 12 A, 480V AC Coil - Circuit Breaker Starters with Thermal Overloads
EATONCircuit Breaker Starters with Thermal Overloads

EATON Combination Motor Starter: 3 Poles, Circuit Breaker, 12 A, 480V AC Coil

The EATON ECX77D1CJB-J is a 3-pole, three-phase combination motor starter integrating a circuit breaker with adjustable thermal overload protection. It features a 480V AC coil, a Hand/Off/Auto selector switch…

SKU 3G-OTH-40207

Brand
EATON
Item
Combination Motor Starter: 3 Poles, Circuit Breaker, 12 A, 480V AC Coil
Category
Circuit Breaker Starters with Thermal Overloads
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineer
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

Technical Specifications

EATON
Manufacturer Part Number
ECX77D1CJB-J
Type
Circuit Breaker, 12 A, Thermal Protection
AC
480V
AC Coil
480V
Poles/Phase
3 Pole / Three Phase
Coil Voltage
480V AC
Operator Type
Hand/Off/Auto (Selector Switch)
Thermal Unit Type
Adjustable Thermal Units (Included)
Control Transformer
Yes
Wire Termination Type
Screws
Auxiliary Contact Form
1NO
View Full Spec Sheet

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 ECX77D1CJB-J is a 3-pole, three-phase combination motor starter integrating a circuit breaker with adjustable thermal overload protection. It features a 480V AC coil, a Hand/Off/Auto selector switch operator, and includes a control transformer and one normally open auxiliary contact. Wire termination is via screws, and adjustable thermal units are included for motor protection.

Frequently Asked Questions

What is the EATON ECX77D1CJB-J combination motor starter used for?

The EATON ECX77D1CJB-J is used to start and protect three-phase motors in industrial applications. It integrates a circuit breaker with adjustable thermal overload protection, a 480V AC coil, and a Hand/Off/Auto selector switch, making it suitable for motor control centers and machinery requiring reliable overcurrent and thermal protection.

What are the specifications of the EATON ECX77D1CJB-J combination motor starter?

The EATON ECX77D1CJB-J is a 3-pole, three-phase combination motor starter rated for 12 A at 480V AC. It includes a 480V AC coil, a control transformer, adjustable thermal units, one normally open auxiliary contact, and screw-type wire termination. The operator type is a Hand/Off/Auto selector switch.

Where to buy the EATON ECX77D1CJB-J combination motor starter worldwide?

You can source the EATON ECX77D1CJB-J combination motor starter through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time; we supply genuine EATON components for your motor protection needs.

How to select the correct thermal unit for the EATON ECX77D1CJB-J starter?

To select the correct thermal unit for the EATON ECX77D1CJB-J, match the adjustable thermal unit range to the full-load current of your three-phase motor. The starter includes adjustable thermal units, so set the dial to the motor's nameplate amperage. Always follow NEC and local codes for motor protection sizing.

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 circuit breaker starters with thermal overloads. 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 →

Similar products

Matched by specification & description
Combination Motor Starter: 3 Poles, Circuit Breaker, 12 A, 480V AC Coil, Thermal Protection, 480V AC (MPN ECX77D1CJB-K). Key specifications — Brand: EATON; Auxiliary Contact Form: 1NO; Coil Voltage: 480V AC; Control Transformer: Yes; Wire Termination Type: Screws; Poles/Phase: 3 Pole / Three Phase; Operator Type: Hand/Off/Auto (Selector Switch); Thermal Unit Type: Adjustable Thermal Units (Included).
EATON
Combination Motor Starter: 3 Poles, Circuit Breaker, 12 A, 480V AC Coil, Thermal Protection, 480V AC (MPN ECX77D1CJB-K). Key specifications — Brand: EATON; Auxiliary Contact Form: 1NO; Coil Voltage: 480V AC; Control Transformer: Yes; Wire Termination Type: Screws; Poles/Phase: 3 Pole / Three Phase; Operator Type: Hand/Off/Auto (Selector Switch); Thermal Unit Type: Adjustable Thermal Units (Included).
Combination Motor Starter: 3 Poles, Circuit Breaker, 12 A, 480V AC Coil, Thermal Protection, 480V AC (MPN ECX77D1CJB-H). Key specifications — Brand: EATON; Auxiliary Contact Form: 1NO; Coil Voltage: 480V AC; Control Transformer: Yes; Wire Termination Type: Screws; Poles/Phase: 3 Pole / Three Phase; Operator Type: Hand/Off/Auto (Selector Switch); Thermal Unit Type: Adjustable Thermal Units (Included).
EATON
Combination Motor Starter: 3 Poles, Circuit Breaker, 12 A, 480V AC Coil, Thermal Protection, 480V AC (MPN ECX77D1CJB-H). Key specifications — Brand: EATON; Auxiliary Contact Form: 1NO; Coil Voltage: 480V AC; Control Transformer: Yes; Wire Termination Type: Screws; Poles/Phase: 3 Pole / Three Phase; Operator Type: Hand/Off/Auto (Selector Switch); Thermal Unit Type: Adjustable Thermal Units (Included).
Combination Motor Starter: 3 Poles, Circuit Breaker, 12 A, 480V AC Coil, Thermal Protection, 480V AC (MPN ECX77D8CJB-J). Key specifications — Brand: EATON; Auxiliary Contact Form: 1NO; Coil Voltage: 480V AC; Control Transformer: Yes; Wire Termination Type: Screws; Poles/Phase: 3 Pole / Three Phase; Operator Type: Hand/Off/Auto (Selector Switch); Thermal Unit Type: Adjustable Thermal Units (Included).
EATON
Combination Motor Starter: 3 Poles, Circuit Breaker, 12 A, 480V AC Coil, Thermal Protection, 480V AC (MPN ECX77D8CJB-J). Key specifications — Brand: EATON; Auxiliary Contact Form: 1NO; Coil Voltage: 480V AC; Control Transformer: Yes; Wire Termination Type: Screws; Poles/Phase: 3 Pole / Three Phase; Operator Type: Hand/Off/Auto (Selector Switch); Thermal Unit Type: Adjustable Thermal Units (Included).
Combination Motor Starter: 3 Poles, Circuit Breaker, 65 A, 480V AC Coil, Thermal Protection, 480V AC (MPN ECX77L2CJD-R). Key specifications — Brand: EATON; Auxiliary Contact Form: 1NO; Coil Voltage: 480V AC; Control Transformer: Yes; Wire Termination Type: Screws; Poles/Phase: 3 Pole / Three Phase; Operator Type: Hand/Off/Auto (Selector Switch); Thermal Unit Type: Adjustable Thermal Units (Included).
EATON
Combination Motor Starter: 3 Poles, Circuit Breaker, 65 A, 480V AC Coil, Thermal Protection, 480V AC (MPN ECX77L2CJD-R). Key specifications — Brand: EATON; Auxiliary Contact Form: 1NO; Coil Voltage: 480V AC; Control Transformer: Yes; Wire Termination Type: Screws; Poles/Phase: 3 Pole / Three Phase; Operator Type: Hand/Off/Auto (Selector Switch); Thermal Unit Type: Adjustable Thermal Units (Included).
Combination Motor Starter: 3 Poles, Circuit Breaker, 32 A, 480V AC Coil, Thermal Protection, 480V AC (MPN ECX77H1CJD-Q). Key specifications — Brand: EATON; Auxiliary Contact Form: 1NO; Coil Voltage: 480V AC; Control Transformer: Yes; Wire Termination Type: Screws; Poles/Phase: 3 Pole / Three Phase; Operator Type: Hand/Off/Auto (Selector Switch); Thermal Unit Type: Adjustable Thermal Units (Included).
EATON
Combination Motor Starter: 3 Poles, Circuit Breaker, 32 A, 480V AC Coil, Thermal Protection, 480V AC (MPN ECX77H1CJD-Q). Key specifications — Brand: EATON; Auxiliary Contact Form: 1NO; Coil Voltage: 480V AC; Control Transformer: Yes; Wire Termination Type: Screws; Poles/Phase: 3 Pole / Three Phase; Operator Type: Hand/Off/Auto (Selector Switch); Thermal Unit Type: Adjustable Thermal Units (Included).
Combination Motor Starter: 3 Poles, Circuit Breaker, 32 A, 480V AC Coil, Thermal Protection, 480V AC (MPN ECX77H8CJD-Q). Key specifications — Brand: EATON; Auxiliary Contact Form: 1NO; Coil Voltage: 480V AC; Control Transformer: Yes; Wire Termination Type: Screws; Poles/Phase: 3 Pole / Three Phase; Operator Type: Hand/Off/Auto (Selector Switch); Thermal Unit Type: Adjustable Thermal Units (Included).
EATON
Combination Motor Starter: 3 Poles, Circuit Breaker, 32 A, 480V AC Coil, Thermal Protection, 480V AC (MPN ECX77H8CJD-Q). Key specifications — Brand: EATON; Auxiliary Contact Form: 1NO; Coil Voltage: 480V AC; Control Transformer: Yes; Wire Termination Type: Screws; Poles/Phase: 3 Pole / Three Phase; Operator Type: Hand/Off/Auto (Selector Switch); Thermal Unit Type: Adjustable Thermal Units (Included).

More from EATON

View all EATON parts →
Combination Motor Starter: 3 Poles, Circuit Breaker, 65 A, 208V AC Coil, Thermal Protection, 208V AC (MPN ECX77L2EJD-S). Key specifications — Brand: EATON; Auxiliary Contact Form: 1NO; Coil Voltage: 208V AC; Control Transformer: Yes; Wire Termination Type: Screws; Poles/Phase: 3 Pole / Three Phase; Operator Type: Hand/Off/Auto (Selector Switch); Thermal Unit Type: Adjustable Thermal Units (Included).
EATON
Combination Motor Starter: 3 Poles, Circuit Breaker, 65 A, 208V AC Coil, Thermal Protection, 208V AC (MPN ECX77L2EJD-S). Key specifications — Brand: EATON; Auxiliary Contact Form: 1NO; Coil Voltage: 208V AC; Control Transformer: Yes; Wire Termination Type: Screws; Poles/Phase: 3 Pole / Three Phase; Operator Type: Hand/Off/Auto (Selector Switch); Thermal Unit Type: Adjustable Thermal Units (Included).
Combination Motor Starter: 3 Poles, Circuit Breaker, 32 A, 208V AC Coil, Thermal Protection, 208V AC (MPN ECX77H1EJD-Q). Key specifications — Brand: EATON; Auxiliary Contact Form: 1NO; Coil Voltage: 208V AC; Control Transformer: Yes; Wire Termination Type: Screws; Poles/Phase: 3 Pole / Three Phase; Operator Type: Hand/Off/Auto (Selector Switch); Thermal Unit Type: Adjustable Thermal Units (Included).
EATON
Combination Motor Starter: 3 Poles, Circuit Breaker, 32 A, 208V AC Coil, Thermal Protection, 208V AC (MPN ECX77H1EJD-Q). Key specifications — Brand: EATON; Auxiliary Contact Form: 1NO; Coil Voltage: 208V AC; Control Transformer: Yes; Wire Termination Type: Screws; Poles/Phase: 3 Pole / Three Phase; Operator Type: Hand/Off/Auto (Selector Switch); Thermal Unit Type: Adjustable Thermal Units (Included).
Combination Motor Starter: 3 Poles, Circuit Breaker, 12 A, 600V AC Coil, Thermal Protection, 600V AC (MPN ECX77D1DJB-H). Key specifications — Brand: EATON; Auxiliary Contact Form: 1NO; Coil Voltage: 600V AC; Control Transformer: Yes; Wire Termination Type: Screws; Poles/Phase: 3 Pole / Three Phase; Operator Type: Hand/Off/Auto (Selector Switch); Thermal Unit Type: Adjustable Thermal Units (Included).
EATON
Combination Motor Starter: 3 Poles, Circuit Breaker, 12 A, 600V AC Coil, Thermal Protection, 600V AC (MPN ECX77D1DJB-H). Key specifications — Brand: EATON; Auxiliary Contact Form: 1NO; Coil Voltage: 600V AC; Control Transformer: Yes; Wire Termination Type: Screws; Poles/Phase: 3 Pole / Three Phase; Operator Type: Hand/Off/Auto (Selector Switch); Thermal Unit Type: Adjustable Thermal Units (Included).
Combination Motor Starter: 3 Poles, Circuit Breaker, 12 A, 208V AC Coil, Thermal Protection, 208V AC (MPN ECX77D1EJB-H). Key specifications — Brand: EATON; Auxiliary Contact Form: 1NO; Coil Voltage: 208V AC; Control Transformer: Yes; Wire Termination Type: Screws; Poles/Phase: 3 Pole / Three Phase; Operator Type: Hand/Off/Auto (Selector Switch); Thermal Unit Type: Adjustable Thermal Units (Included).
EATON
Combination Motor Starter: 3 Poles, Circuit Breaker, 12 A, 208V AC Coil, Thermal Protection, 208V AC (MPN ECX77D1EJB-H). Key specifications — Brand: EATON; Auxiliary Contact Form: 1NO; Coil Voltage: 208V AC; Control Transformer: Yes; Wire Termination Type: Screws; Poles/Phase: 3 Pole / Three Phase; Operator Type: Hand/Off/Auto (Selector Switch); Thermal Unit Type: Adjustable Thermal Units (Included).
Combination Motor Starter: 3 Poles, Circuit Breaker, 12 A, 240V AC Coil, Thermal Protection, 240V AC (MPN ECX77D8BJB-H). Key specifications — Brand: EATON; Auxiliary Contact Form: 1NO; Coil Voltage: 240V AC; Control Transformer: Yes; Wire Termination Type: Screws; Poles/Phase: 3 Pole / Three Phase; Operator Type: Hand/Off/Auto (Selector Switch); Thermal Unit Type: Adjustable Thermal Units (Included).
EATON
Combination Motor Starter: 3 Poles, Circuit Breaker, 12 A, 240V AC Coil, Thermal Protection, 240V AC (MPN ECX77D8BJB-H). Key specifications — Brand: EATON; Auxiliary Contact Form: 1NO; Coil Voltage: 240V AC; Control Transformer: Yes; Wire Termination Type: Screws; Poles/Phase: 3 Pole / Three Phase; Operator Type: Hand/Off/Auto (Selector Switch); Thermal Unit Type: Adjustable Thermal Units (Included).
Combination Motor Starter: 3 Poles, Circuit Breaker, 32 A, 480V AC Coil, Thermal Protection, 480V AC (MPN ECX77H2CJD-Q). Key specifications — Brand: EATON; Auxiliary Contact Form: 1NO; Coil Voltage: 480V AC; Control Transformer: Yes; Wire Termination Type: Screws; Poles/Phase: 3 Pole / Three Phase; Operator Type: Hand/Off/Auto (Selector Switch); Thermal Unit Type: Adjustable Thermal Units (Included).
EATON
Combination Motor Starter: 3 Poles, Circuit Breaker, 32 A, 480V AC Coil, Thermal Protection, 480V AC (MPN ECX77H2CJD-Q). Key specifications — Brand: EATON; Auxiliary Contact Form: 1NO; Coil Voltage: 480V AC; Control Transformer: Yes; Wire Termination Type: Screws; Poles/Phase: 3 Pole / Three Phase; Operator Type: Hand/Off/Auto (Selector Switch); Thermal Unit Type: Adjustable Thermal Units (Included).
Combination Motor Starter: 3 Poles, Circuit Breaker, 65 A, 208V AC Coil, Thermal Protection, 208V AC (MPN ECX77L8EJD-S). Key specifications — Brand: EATON; Auxiliary Contact Form: 1NO; Coil Voltage: 208V AC; Control Transformer: Yes; Wire Termination Type: Screws; Poles/Phase: 3 Pole / Three Phase; Operator Type: Hand/Off/Auto (Selector Switch); Thermal Unit Type: Adjustable Thermal Units (Included).
EATON
Combination Motor Starter: 3 Poles, Circuit Breaker, 65 A, 208V AC Coil, Thermal Protection, 208V AC (MPN ECX77L8EJD-S). Key specifications — Brand: EATON; Auxiliary Contact Form: 1NO; Coil Voltage: 208V AC; Control Transformer: Yes; Wire Termination Type: Screws; Poles/Phase: 3 Pole / Three Phase; Operator Type: Hand/Off/Auto (Selector Switch); Thermal Unit Type: Adjustable Thermal Units (Included).
Combination Motor Starter: 3 Poles, Circuit Breaker, 12 A, 240V AC Coil, Thermal Protection, 240V AC (MPN ECX77D2BJB-H). Key specifications — Brand: EATON; Auxiliary Contact Form: 1NO; Coil Voltage: 240V AC; Control Transformer: Yes; Wire Termination Type: Screws; Poles/Phase: 3 Pole / Three Phase; Operator Type: Hand/Off/Auto (Selector Switch); Thermal Unit Type: Adjustable Thermal Units (Included).
EATON
Combination Motor Starter: 3 Poles, Circuit Breaker, 12 A, 240V AC Coil, Thermal Protection, 240V AC (MPN ECX77D2BJB-H). Key specifications — Brand: EATON; Auxiliary Contact Form: 1NO; Coil Voltage: 240V AC; Control Transformer: Yes; Wire Termination Type: Screws; Poles/Phase: 3 Pole / Three Phase; Operator Type: Hand/Off/Auto (Selector Switch); Thermal Unit Type: Adjustable Thermal Units (Included).