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

3G Electric
GE CR309B103 Enclosed Reversing Starter with Thermal Overloads - Enclosed Reversing Starters with Thermal Overloads
GEEnclosed Reversing Starters with Thermal Overloads

GE CR309B103 Enclosed Reversing Starter with Thermal Overloads

The GE Magnetic Motor Starter: Reversing is an enclosed reversing starter with thermal overloads, designed for three-phase applications. It features a 240V AC coil, NEMA Size 0 rating, and 18 A capacity, with a pilot…

SKU 3G-OTH-41102

Brand
GE
Item
CR309B103 Enclosed Reversing Starter with Thermal Overloads
Part Number
CR309B103
Category
Enclosed Reversing Starters with Thermal Overloads
Available to Order
Also known as:CR309B103GE
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 — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

GE
Manufacturer Part Number
CR309B103
Type
NEMA Size 0, 18 A, Thermal Protection
Phase
Three
Poles
3
AC Coil
240V
Coil Voltage
240V AC
Signaling Features
Pilot Light
Thermal Units Required
6 Melting Alloy Units (Not Included)

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

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

Product Description

The GE Magnetic Motor Starter: Reversing is an enclosed reversing starter with thermal overloads, designed for three-phase applications. It features a 240V AC coil, NEMA Size 0 rating, and 18 A capacity, with a pilot light for signaling. This unit requires 6 melting alloy thermal units (not included) for overload protection, as specified by the manufacturer part number CR309B103.

Frequently Asked Questions

What is the GE Magnetic Motor Starter CR309B103 used for?

The GE Magnetic Motor Starter CR309B103 is an enclosed reversing starter with thermal overloads, used to control the forward and reverse rotation of three-phase motors in industrial applications such as conveyors, pumps, and fans.

What are the specifications of the GE CR309B103 reversing starter?

The GE CR309B103 is a NEMA Size 0 reversing starter with 3 poles, rated 18 A, and a 240V AC coil. It includes a pilot light for signaling and requires 6 melting alloy thermal units (not included) for overload protection. It is designed for three-phase applications.

Where to buy the GE CR309B103 magnetic starter worldwide?

You can source the GE CR309B103 magnetic starter through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations, ensuring reliable supply for your operations.

How to select thermal units for the GE CR309B103 starter?

To select thermal units for the GE CR309B103 starter, refer to the motor's full-load current rating and ambient temperature. GE specifies using 6 melting alloy thermal units (not included) for overload protection. Consult the motor nameplate and GE's selection table for the correct unit size.

Used in

Common applications for GE
Commercial electrical distribution — GE FB-Frame molded case circuit breakers for 20 A branch protection with 100 kA interrupting capacity at 240/277 V AC.
Industrial motor control — GE NEMA Size 1 enclosed non-reversing starters with 480 V AC coils and thermal overloads for three-phase motor starting.
Lighting control systems — GE CR460 series mechanically held lighting contactors for remote switching of 277 V AC, 30 A lighting loads.
Panelboard branch protection — GE THQB32100 three-pole bolt-on miniature circuit breakers rated 100 A at 120/240 V AC with 10 kA interrupting capacity.
HVAC damper actuation — GE Relay GE 145 servo motor with 10 Nm torque for damper shafts from 8 to 10 mm.
Motor overload protection — GE CR123C118A thermal overload relay for monitoring current and preventing equipment damage in motor starters.
Not sure this is the right part? Photo-identify it→

GE Products

3G Electric supplies GE enclosed reversing 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 →

More from GE

View all GE parts →

Customer reviews

No reviews yet — be the first

Questions & answers

No questions yet — ask us the first