Home › Manufacturers › Siemens › HEG3B125

Siemens

Siemens HEG3B125 3-Phase Fuseless Motor Disconnect Switch

Siemens HEG3B125 3-pole fuseless motor disconnect switch.

● In Stock 12-Mo Warranty Same-Day Dispatch Ships Worldwide 🎖 Veteran-Owned

In Stock — Ready to Ship

ManufacturerSiemens

Part numberHEG3B125

Poles 3

Amperage 125A

Type Fuseless Motor Disconnect Switch

Voltage Up to 600V AC

Get a price for HEG3B125

Response within 1 business hour

🛡

12-month warranty

All units tested

⚡

Same-day dispatch

Order by 2pm CST

🌐

Worldwide delivery

US, EU, Asia, Middle East

🎖

Veteran-owned

CAGE: 9NK75

Fuseless design High amperage rating (125A) 3-pole configuration Heavy-duty construction Positive disconnect Industrial grade

Product description

The Siemens HEG3B125 is a heavy-duty, 3-pole fuseless motor disconnect switch engineered for high-capacity industrial applications. It offers a robust 125 Amp continuous current rating and a durable design for reliable operation in demanding environments. This switch provides a secure and efficient method for disconnecting power to large motors and equipment.

This disconnect switch is essential for managing power to high-demand machinery in sectors such as heavy manufacturing, large-scale material handling, and mining operations. It ensures safe isolation for equipment that requires substantial electrical current.

Stanlo Automation, a veteran-owned surplus parts distributor, is your source for the Siemens HEG3B125. We pride ourselves on offering quality surplus components, competitive pricing, and fast shipping to meet your industrial automation needs and keep your operations running smoothly.

Technical specifications

Poles	3
Amperage	125A
Type	Fuseless Motor Disconnect Switch
Voltage	Up to 600V AC
Enclosure	NEMA 1

Common applications

High-capacity motor isolation

Heavy manufacturing

Large material handling

Mining operations

Industrial power distribution

Machine safety

Compatible systems

Suitable for 3-phase motor circuits up to 600V AC. Ideal for high-power industrial machinery.

Also known as

Siemens HEG3B125 disconnect HEG3B125 switch Siemens 125 amp motor disconnect

Replaces / compatible with

The HEG3B125 is designed as a direct replacement for Siemens motor disconnect switches with similar specifications and high amperage requirements. Always confirm electrical load and enclosure compatibility.

Technical note

Expert tip

Proper termination and torque settings are critical for the 125A rating; consult the installation guide for specific wiring instructions.

What happens next?

Email confirmation

Immediate receipt acknowledgment sent to you

Account manager assigned

Confirms your part's spec and condition

Your quote delivered

Tailored to your specific requirements

Frequently asked questions

What type of enclosure is the Siemens HEG3B125 typically supplied with?

The Siemens HEG3B125 is commonly supplied in a NEMA 1 enclosure, intended for indoor use to protect against accidental contact with live parts and falling dirt. For environments requiring greater protection, alternative enclosures might be available or necessary.