Siemens Motor protection circuit breaker, 5.5-8A Part number 3RV2111-1HA10

Product Overview

The Siemens 3RV2111-1HA10 is a SIRIUS 3RV2 series motor-protection circuit breaker in size S00, designed for three-phase motor protection with thermal overload and instantaneous short-circuit release. It features an adjustable overload current (A-Release) range of 5.5 … 8 A, a fixed short-circuit release (N-Release) of 104 A, screw-type terminals and a high breaking capacity, making it suitable for compact control panels and motor starter applications.

Key Features

• Motor-protection circuit breaker (MPCB) from Siemens SIRIUS 3RV2 range
• Size designation: S00 for compact installation
• Adjustable overload release (A-Release): 5.5 … 8 A
• Instantaneous short-circuit release (N-Release): 104 A
• Thermal overload plus magnetic trip combination for motor protection
• Screw-type terminals for main and auxiliary wiring
• High switching capacity: up to 100 kA breaking capacity at 400 V AC (Icu) for standard version
• Ambient operating temperature: –20 °C … +60 °C
• Compact size S00 designed for DIN-rail or panel mounting

Technical Specifications

• Product Series: SIRIUS 3RV2
• Article Number: 3RV2111-1HA10
• Size: S00
• Rated Operational Current (Iu) AC-3 at 400 V: 8 A
• Rated Motor Power (AC-3) at 400 V: 3 kW
• Adjustable Overload Range (Ir): 5.5 … 8 A
• Fixed Short-Circuit Release (Instantaneous): 104 A
• Rated Insulation Voltage (Ui): 690 V
• Surge Withstand Voltage: 6 kV
• Mounting / Terminals: Screw-type terminals for main circuit, DIN-rail or panel mounting
• Operating Ambient Temperature: –20 °C to +60 °C
• Mechanical Service Life: typical 100 000 operations

Compliance & Certifications

• Manufactured by Siemens under the SIRIUS motor-protection product line
• Complies with IEC/EN 60947-2 and relevant motor-starter protective device standards

Applications

Ideal for protection of small three-phase motors and feeders in automation systems where compact form factor is required. Common applications include manufacturing machines, conveyors, pumps, and compact motor starter panels where reliable overload and short-circuit protection is essential.