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SQUARE D NEMA Combination Starter: Circuit Breaker, 3 Poles, NEMA Size 1 - Circuit Breaker Starters with Thermal Overloads
SQUARE DCircuit Breaker Starters with Thermal Overloads

SQUARE D NEMA Combination Starter: Circuit Breaker, 3 Poles, NEMA Size 1

The SQUARE D NEMA Combination Starter is a circuit breaker starter with thermal overloads, part of the Series 8539. This three-phase, 3-pole unit has a NEMA Size 1 rating, a maximum voltage rating of 600V AC, and a…

SKU 3G-OTH-44341

Brand
SQUARE D
Item
NEMA Combination Starter: Circuit Breaker, 3 Poles, NEMA Size 1
Category
Circuit Breaker Starters with Thermal Overloads
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Technical Specifications

SQUARE D
Manufacturer Part Number
8539SCG44V02S
Series
8539
Type
NEMA Size 1, NEMA-Rated 1
AC
120V
Phase
Three
Poles
3
Poles/Phase
3 Pole / Three Phase
Coil Voltage
120V AC
Operator Type
No Operator
Control Transformer
No
Includes Pilot Light
No
Maximum Voltage Rating
600V AC
Thermal Units Required
3 Melting Alloy Units (Not Included)
Includes Auxiliary Contacts
No
View Full Spec Sheet

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

Product Description

The SQUARE D NEMA Combination Starter is a circuit breaker starter with thermal overloads, part of the Series 8539. This three-phase, 3-pole unit has a NEMA Size 1 rating, a maximum voltage rating of 600V AC, and a coil voltage of 120V AC. It requires three melting alloy thermal units (not included) and does not include a control transformer, pilot light, or auxiliary contacts.

Used in

Common applications for SQUARE D
Commercial building electrical panels — Square D QO series plug-in circuit breakers for branch circuit protection
Industrial motor control centers — Square D QOB series bolt-on breakers in NQOD panelboards
Heating equipment installations — Square D QOU series unit-mount breakers for overcurrent protection
Outdoor electrical distribution — Square D L-Frame enclosures housing LAL/LHL breakers for 400 A service
Indoor facility power distribution — Square D Q-Frame enclosures with QBL/QDL breakers for 225 A circuits
Retrofit and replacement in existing Square D load centers — QO series breakers for 120/240V AC systems

SQUARE D Products

3G Electric supplies SQUARE D 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.

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