Siemens Sirius Circuit breaker, screw, 3-pole, S2, 690V, 40A Part number 3RV2331-4UC10

Product Overview

The Siemens 3RV2331-4UC10 is a SIRIUS 3RV2 motor protection circuit breaker (size S2) designed for starter combinations. It supports a rated current of 40 A and features a fixed instantaneous short-circuit release (N-release) of 585 A. This compact circuit breaker is equipped with screw-type terminals and standard switching capacity, making it suitable for panel-mounted motor starter applications.

Key Features

• Motor protection circuit breaker from the Siemens SIRIUS 3RV2 series
• Size designation S2 for compact motor starter integration
• Rated operational current: 40 A (AC-3, 400 V)
• Fixed short-circuit release (N-release): 585 A
• Screw-type terminals for reliable electrical connections
• High breaking capacity: Icu up to 65 kA at 400 V
• Designed for plug-in or panel-mount starter combinations

Technical Specifications

• Product Series: SIRIUS 3RV2
• Article Number: 3RV2331-4UC10
• Size: S2
• Poles (main circuit): 3
• Rated Current (Ie) AC-3 at 400 V: 40 A
• Rated Motor Power (AC-3): 18.5 kW at 400 V
• Maximum Short-Circuit Breaking Capacity (Icu): 65 kA at 400 V
• Instantaneous Trip Response (N-release): 585 A
• Terminals: Screw-type, top and bottom
• Width: 55 mm
• Height: 140 mm
• Depth: 149 mm
• Operating Temperature Range: –20 °C to +60 °C
• Mounting: DIN rail or panel, snap-on and screw fastening compatible

Compliance & Certifications

• Manufactured by Siemens under the SIRIUS motor starter and protection portfolio
• Meets IEC/EN 60947 standards for industrial motor protection devices

Applications

Ideal for integration into motor starter combinations, switchgear panels and control cabinets where protection of three-phase motors with up to 40 A rating is required. Commonly used for feeders, motors, pumps and machine tools in industrial automation settings.