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Siemens 48GC39AA4 Thermal Overload Relay - 39A, 3-Pole

Siemens 48GC39AA4 Thermal Overload Relay

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ManufacturerSiemens

Part number48GC39AA4

Type Thermal Overload Relay

Amperage Rating 39A

Number of Poles 3

Mounting Type Direct

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Thermal Protection Ambient Compensated 3-Pole Configuration Auto/Manual Reset Direct Mounting 39A Rating

Product description

The Siemens 48GC39AA4 is a 3-pole thermal overload relay designed for reliable motor protection. It features a fixed 39 Amp rating and is ambient compensated to ensure consistent performance across various operating temperatures. This relay is designed for direct mounting with compatible motor starters.

This overload relay is crucial for safeguarding single and polyphase motors in industrial and commercial applications. Its thermal bimetallic mechanism provides dependable protection against overcurrent conditions that could cause motor damage.

Stanlo Automation, a veteran-owned supplier of surplus industrial automation parts, offers the Siemens 48GC39AA4. We provide quality components and efficient service to support your maintenance and operational needs.

Technical specifications

Type	Thermal Overload Relay
Amperage Rating	39A
Number of Poles	3
Mounting Type	Direct
Reset Type	Auto/Manual
Application	Single/Polyphase Motors
Ambient Compensated	Yes

Common applications

Motor Protection

Industrial Motors

Commercial Motors

Pumps

Fans

Compressors

Compatible systems

Compatible with specific Siemens motor starters

Also known as

Siemens 48GC Overload Relay 39 Amp Overload

Replaces / compatible with

Designed for direct mounting with compatible Siemens motor starters, ensuring proper integration into motor control circuits.

Technical note

Expert tip

This relay requires the use of appropriate heater elements when paired with certain Siemens starters, although many modern Siemens starters integrate overload protection directly.

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Frequently asked questions

Is the Siemens 48GC39AA4 overload relay ambient compensated?

Yes, the Siemens 48GC39AA4 overload relay is ambient compensated. This feature allows it to automatically adjust for surrounding temperature variations, providing more consistent and accurate motor protection.