Overview
The Siemens 3TY4803-0AK6 is a replacement magnet coil engineered for use with Siemens contactor and relay platforms. Designed to meet IEC and NEMA standards, this coil delivers dependable electromagnetic actuation for motor control and automation circuits. Rated for AC operation at 120V, 60Hz, it serves as a direct replacement for legacy contactor assemblies in industrial facilities.
Key Features
- AC 120V, 60Hz operation (compatible with 110V, 50Hz systems)
- Universal fit for multiple contactor frame sizes and types
- IEC and NEMA compliant design
- New, no-box condition — tested and fully functional
- Fast-moving surplus inventory item available for immediate shipment
Technical Specifications
- Manufacturer: Siemens
- Model Number: 3TY4803-0AK6
- Type: Magnet Coil
- Voltage Rating: AC 120V, 60Hz (110V, 50Hz compatible)
- Application: IEC/NEMA Contactor Relay
- Standards: IEC 60947, NEMA standards
- Condition: New, No Box
Typical Applications
- Motor starter coil replacement in AC contactor assemblies
- Electromagnetic relay actuation circuits
- Industrial automation and machine control systems
- Legacy equipment maintenance and retrofit projects
- Facility modernization programs where OEM coils are obsolete or unavailable
Compatibility & Replacements
Compatible With
- Siemens 3TH3 and 3TH4 control relays
- Siemens 3TF30–33 contactors
- Siemens 3TF40–43 contactors
- Siemens 3TB40–44 contactors
- Siemens 3TC44 contactors
- Siemens 3TH8 relays
- NEMA and IEC contactor control circuits rated for 120V AC
Replaces / Drop-In Replacement For
- Original Siemens 3TY4803-0AK6 coils (direct equivalent)
- Furnas Electric equivalent coil assemblies for compatible frame types
- Generic replacement coils for 3TF, 3TB, 3TC, and 3TH series devices
Works With
- Siemens SIRIUS modular contactor systems
- IEC 60947-4-1 compliant motor starters
- AC 120V three-phase and single-phase motor control panels
- Industrial PLC and automation control networks
- Facility SCADA and energy management systems




