Siemens Circuit breaker, size S00, 1NO+1NC, class 10, 0.9-1.25 Part number 3RV2011-0KA25

Product Overview

The Siemens 3RV2011-0KA25 is a SIRIUS 3RV2 motor protection circuit breaker designed for three-phase motor feeders with overload and short-circuit protection. It offers adjustable thermal protection from 0.9 to 1.25 A in a compact S00 frame size, enabling reliable safeguarding of motors and associated load circuits in industrial panels.

Key Features

• Motor protection circuit breaker for three-phase motor feeders
• Adjustable thermal overload release setting range: 0.9 … 1.25 A
• Standard interrupting capacity up to 100 kA across rated voltages
• Frame size S00 – space-efficient design
• Integrated auxiliary switch (1 NO + 1 NC) for status signalling
• DIN-rail or screw mounting suitable for compact panels

Technical Specifications

• Product Series: SIRIUS 3RV2
• Article Number: 3RV2011-0KA25
• Current Setting Range (thermal overload): 0.9 … 1.25 A
• Number of Poles: 3
• Frame Size: S00
• Rated Short-Circuit Breaking Capacity (Icu): 100 kA (at 240/400/500/690 V)
• Rated Operational Current (Iu): 1.25 A (at AC-3, 400 V)
• Auxiliary Contacts: 1 NO + 1 NC
• Terminal Type: Spring-loaded terminals
• Ambient Operating Temperature: –20 °C … +60 °C

Compliance & Certifications

• Designed to meet Siemens industrial protection and switching-device standards
• Constructed for use in motor-protection applications, ensuring compliance with relevant IEC safety and performance requirements

Applications

Ideal for compact motor control systems, feeder circuits and applications requiring reliable motor protection in industrial environments. Suitable for installation in control panels, machinery feeding, and automation lines where three-phase motors operate within the specified 0.9-1.25 A range and space is limited.