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Siemens 3RV2031-4JB10 Size S2 Class 20 Motor Protection Circuit Breaker

Siemens 3RV2031-4JB10 Size S2 Class 20 motor protection circuit breaker

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ManufacturerSiemens

Part number3RV2031-4JB10

Size S2

Rated operational current (Ie) 65 A

Adjustment range of overload releases 54...65 A

Actuation type THERMAL

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Motor protection Size S2 Class 20 overload protection Adjustable thermal release High current range (54-65A) Screw terminals

Product description

The Siemens 3RV2031-4JB10 is a Size S2 motor protection circuit breaker featuring a Class 20 trip characteristic, suitable for motors with longer start-up times. It has an adjustable A-release for thermal overload from 54 to 65 A and a short-circuit N-release at 845 A. This breaker uses screw terminals for secure connections and offers standard switching capacity for robust industrial applications.

This breaker is ideal for protecting larger motors that may experience prolonged acceleration periods or higher inrush currents, preventing nuisance tripping. It finds application in various industrial sectors, including manufacturing, processing plants, and heavy machinery operations where reliable, slightly delayed overload protection is beneficial.

Stanlo Automation, a veteran-owned surplus parts distributor, offers the Siemens 3RV2031-4JB10 with the assurance of quality and performance. We are committed to providing dependable automation components to keep your operations running smoothly.

Technical specifications

Size	S2
Rated operational current (Ie)	65 A
Adjustment range of overload releases	54...65 A
Actuation type	THERMAL
Trip class	CLASS 20
Number of poles	3
Voltage	400 V
Protection class	IP20

Common applications

Large motor protection

Industrial machinery

Processing plants

Heavy machinery

Material handling

Applications with high inrush

Compatible systems

Industrial motor control systems requiring Class 20 protection up to 65A

Also known as

Siemens 3RV2 Class 20 breaker 54-65A S2 motor starter protector 3RV2031-4JB10 Siemens high current Class 20 breaker

Replaces / compatible with

The Siemens 3RV2031-4JB10 provides Class 20 motor protection for higher current applications. It is a suitable replacement for older motor protection devices where a longer trip delay is required for motor startup.

Technical note

Expert tip

For motors with particularly high starting currents, ensure the thermal adjustment on the 3RV2031-4JB10 is set appropriately within its 54-65A range to prevent nuisance trips during startup.

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Frequently asked questions

Why choose the Siemens 3RV2031-4JB10 with Class 20 for motor protection?

The Siemens 3RV2031-4JB10's Class 20 rating offers a longer time delay before tripping on overload compared to Class 10. This makes it ideal for motors with high starting torque or longer acceleration times, preventing premature tripping while still providing essential overload protection.