Siemens Motor protection circuit breaker, 0.9-1.25A Part number 3RV2111-0KA10

Product Overview

The Siemens 3RV2111-0KA10 is a SIRIUS 3RV2 motor-protection circuit breaker in size S00, designed for three-phase motor protection employing a thermal overload release and fixed short-circuit release. It features an adjustable overload range of 0.9 … 1.25 A and a fixed instantaneous trip at 16 A. This compact breaker is tailored for control panels and motor-starter applications where low current protection is required.

Key Features

• Motor-protection circuit breaker from the Siemens SIRIUS 3RV2 family
• Size designation: S00 for compact installation
• Adjustable overload release (A-release): 0.9 … 1.25 A
• Fixed instantaneous short-circuit release (N-release): 16 A
• Trip class: Class 10
• Screw-type terminals for long-term secure connections
• Rated breaking capacity up to 100 kA (Icu) for AC voltages up to 690 V
• Wide ambient operating temperature: –20 °C … +60 °C

Technical Specifications

• Product Series: SIRIUS 3RV2
• Article Number: 3RV2111-0KA10
• Size: S00
• Number of Poles (main current circuit): 3
• Adjustable Overload Range (Ir): 0.9 … 1.25 A
• Operational Current (AC-3 at 400 V): 1.25 A
• Fixed Short-Circuit Release (Instantaneous): 16 A
• Rated Insulation Voltage (Ui): 690 V
• Surge Voltage Withstand: 6 kV
• Protection Rating: IP20 (front)
• Operating Temperature Range: –20 °C … +60 °C
• Mounting / Terminals: Screw-type, DIN-rail or panel compatible

Compliance & Certifications

• Manufactured by Siemens under the SIRIUS motor-protection product line
• Complies with IEC/EN standards for automatic circuit-breakers and motor-protection devices

Applications

Ideal for protecting small three-phase motors and feeders in automation systems and control panels where low current ratings are needed. Commonly used in machine tools, conveyors, pumps, and other installations requiring compact breaker size, reliable overload protection and high breaking capacity in a tight footprint.