Siemens 3RT20241AM20 Contactor S0 12A

Product Description

The SIEMENS 3RT20241AM20 is a Size S0 IEC-style contactor rated at 12 amps, designed for switching three-phase motor and resistive loads in industrial and commercial control panels. It operates as the main switching element in motor starter assemblies, responding to control signals to open and close the main power contacts. Licensed electricians and industrial controls technicians install this device in motor control centers, distribution panels, and machine control enclosures. The compact footprint makes it well suited for high-density panel builds where rail space is limited.

This contactor is used in three-phase motor control applications across commercial and light industrial settings. Typical installations include conveyor systems, pump controls, fan starters, and HVAC unit motor starters where a reliable, IEC-rated switching device is required. The Size S0 frame is a widely adopted form factor in DIN-rail-mounted starter assemblies.

Key Features

• 12-amp main contact rating suitable for small to mid-range three-phase motor loads
• IEC Size S0 frame for compatibility with standard DIN-rail enclosures and accessories
• Compact body measuring 3.622 inches long by 2.126 inches wide by 4.154 inches tall
• Lightweight construction at 0.908 pounds, reducing panel dead load
• Designed for use in motor starter and contactor assembly configurations

Compatibility

Designed as an OEM-style replacement or new-installation contactor for IEC Size S0 motor starter assemblies using a 12-amp-rated switching device.

Installation Notes

Installation should be performed by a licensed electrician in accordance with NEC Article 430 for motor branch-circuit and control wiring. De-energize and lock out the panel before mounting or wiring the contactor. The device is typically DIN-rail mounted; verify rail and enclosure clearances before installation. Do not exceed the rated current or apply voltages outside the coil and contact ratings specified on the device nameplate.

Technical Specifications

• Current Rating: 12 amps
• Frame Size: S0
• Length: 3.622 inches
• Width: 2.126 inches
• Height: 4.154 inches
• Weight: 0.908 pounds
• Package Quantity: 1 per pack
• UPC: 88762171282

Standard Information

• Brand: SIEMENS
• Manufacturer Part Number: 3RT20241AM20