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Siemens 3RV2031-4KA10 Size S2 Motor Protection Circuit Breaker

Siemens 3RV2031-4KA10 Size S2 motor protection circuit breaker

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ManufacturerSiemens

Part number3RV2031-4KA10

Size S2

Rated operational current (Ie) 73 A

Adjustment range of overload releases 62...73 A

Actuation type THERMAL

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Motor protection Size S2 Class 10 Adjustable thermal release High current range (62-73A) Screw terminals

Product description

The Siemens 3RV2031-4KA10 is a Size S2 motor protection circuit breaker designed for higher current applications, offering Class 10 protection. It features an adjustable A-release for thermal overload protection from 62 to 73 A and a high short-circuit N-release at 949 A. This breaker utilizes screw terminals for secure and reliable connections and provides standard switching capacity for demanding industrial environments.

This circuit breaker is ideal for protecting larger motors that operate at higher power outputs. Common applications include heavy-duty industrial machinery, large pumps, fans, and other equipment where robust protection against overcurrents and short circuits is critical for operational uptime.

Stanlo Automation, a veteran-owned surplus automation parts distributor, offers the Siemens 3RV2031-4KA10. We provide thoroughly inspected and tested components, ensuring you receive dependable and cost-effective solutions for your automation needs.

Technical specifications

Size	S2
Rated operational current (Ie)	73 A
Adjustment range of overload releases	62...73 A
Actuation type	THERMAL
Trip class	CLASS 10
Number of poles	3
Voltage	400 V
Protection class	IP20

Common applications

Large motor protection

Heavy industrial machinery

Industrial pumps

High-power fans

Manufacturing equipment

Processing lines

Compatible systems

Industrial motor control systems requiring Class 10 protection up to 73A

Also known as

Siemens 3RV2 62-73A breaker S2 motor starter protector 3RV2031-4KA10 Siemens high current circuit breaker Class 10

Replaces / compatible with

The Siemens 3RV2031-4KA10 is part of the 3RV2 series, designed for robust motor protection in higher current ranges up to 73A with Class 10 characteristics. It serves as a reliable replacement for comparable motor protection devices.

Technical note

Expert tip

Properly setting the thermal overload adjustment on the 3RV2031-4KA10 to match the motor's full load amperage is crucial for effective protection without nuisance tripping.

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Frequently asked questions

What is the short-circuit breaking capacity of the Siemens 3RV2031-4KA10?

The Siemens 3RV2031-4KA10 features a short-circuit release (N-release) of 949 Amps. This provides robust protection against fault currents, safeguarding the motor and associated electrical system.