Home › Manufacturers › Siemens › 3RV1031-4FB10

Siemens

Siemens 3RV1031-4FB10 Motor Protection Circuit Breaker - 28-40A

Siemens 3RV1031-4FB10 is a Size S2 motor protection circuit breaker.

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

In Stock — Ready to Ship

ManufacturerSiemens

Part number3RV1031-4FB10

Size S2

Class 20

A-release 28-40A

Short-circuit release 520A

Get a price for 3RV1031-4FB10

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

Motor protection Adjustable current setting Class 20 thermal overload Screw terminals High short-circuit rating Standard switching capacity

Product description

The Siemens 3RV1031-4FB10 is a Size S2 motor protection circuit breaker designed for motor protection with a Class 20 rating. It features an adjustable A-release range from 28 to 40A and a high short-circuit release capacity of 520A. Connections are made via standard screw terminals.

This circuit breaker is suitable for protecting larger motors where Class 20 protection is appropriate, offering a balance between sensitivity and resistance to nuisance tripping during motor startup. It is used in various industrial applications, including pumps, fans, and processing equipment.

As a veteran-owned surplus parts distributor, Stanlo Automation offers this discontinued Siemens breaker. We are committed to providing essential industrial components to ensure the longevity and efficiency of your automation systems.

Technical specifications

Size	S2
Class	20
A-release	28-40A
Short-circuit release	520A
Terminals	Screw
Switching Capacity	Standard

Common applications

Heavy duty motor protection

Industrial machinery

Pump systems

Fan systems

Material handling

Compatible systems

Motor protection applications

Also known as

3RV10314FB10 Siemens SIRIUS 3RV1031 S2 breaker 28-40A

Replaces / compatible with

This phased-out product's successor is the SIRIUS 3RV2 series, with a preferred successor type of 3RV2031-4UB10. Verify the successor's specifications for direct replacement compatibility.

Technical note

Expert tip

The 520A short-circuit release on this S2 breaker ensures robust protection against fault currents, crucial for maintaining safety in systems with larger motors.

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 are the advantages of using a Class 20 breaker like the 3RV1031-4FB10?

A Class 20 breaker, such as the Siemens 3RV1031-4FB10, offers a higher thermal tripping delay compared to Class 10 breakers. This makes it less prone to nuisance tripping during motor start-up or temporary load surges, while still providing effective overload protection.