Siemens 3RV1021-1CA10 Motor Starter Protector

Product Description

The SIEMENS 3RV1021-1CA10 is a thermal magnetic motor starter protector (MSP) designed to provide overload and short-circuit protection for three-phase and single-phase motors in industrial control panels. MSPs combine the function of a motor circuit breaker and overload relay into a single compact device, simplifying panel layout and reducing wiring complexity. This unit is sized for use in motor branch circuit applications where reliable, resettable protection is required. Licensed electricians and industrial control panel builders are the primary installers of this device.

Motor starter protectors of this type are used in industrial and commercial applications including pump panels, conveyor systems, fan arrays, and compressor control circuits. The 3RV1021-1CA10 mounts to standard DIN rail for straightforward integration into existing or new control panel assemblies. Its compact footprint makes it suitable for space-constrained enclosures where multiple starters are ganged in close proximity.

Key Features

• Combines overload and short-circuit protection in a single device, eliminating a separate overload relay
• Thermal magnetic trip mechanism provides both overload and instantaneous short-circuit response
• DIN rail mounting for fast, tool-minimal installation in standard control panels
• Compact form factor suitable for multi-starter panel configurations
• Manual reset design allows controlled restart after a fault condition

Compatibility

Designed as an OEM-style motor starter protector for use in industrial motor branch circuit protection applications where a thermal magnetic MSP of this frame size is specified.

Installation Notes

Installation must be performed by a qualified electrician in accordance with the National Electrical Code (NEC) and any applicable local codes. De-energize and lock out the panel before installing or replacing this device. Verify that the motor full-load amperage falls within the set current range of the MSP before placing the system in service. Do not attempt to adjust the trip setting while the circuit is energized.

Technical Specifications

• Product Type: Motor Starter Protector (MSP), Thermal Magnetic
• Length: 4.02 inches
• Width: 1.93 inches
• Height: 4.02 inches
• Weight: 0.60 pounds
• UPC: 75455440920

Standard Information

• Brand: SIEMENS
• Manufacturer Part Number: 3RV1021-1CA10