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Siemens 3RF2255-1AC35 3-Phase Semiconductor Relay - 55A

Siemens 3RF2255-1AC35 3-Phase Semiconductor Relay

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ManufacturerSiemens

Part number3RF2255-1AC35

Type Semiconductor Relay

Phase 3-Phase

Current Rating 55 A (at 40°C)

Operating Voltage 48-600 V AC

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3-Phase operation 55A high current rating 48-600V AC operating voltage 110V AC control voltage 1200V blocking voltage Screw terminals Designed for cooling surfaces

Product description

The Siemens 3RF2255-1AC35 is a 3-phase semiconductor relay from the SIRIUS 3RF2 series, designed for high-capacity three-phase load switching. It is rated for 55 A at 40°C and operates with a 3-phase controlled voltage of 48-600 V AC, utilizing a 110 V AC control supply voltage. This relay features screw terminals and a robust blocking voltage of 1200 V, suitable for demanding industrial applications.

This high-current 3-phase semiconductor relay is employed in heavy-duty industrial applications such as large motor control, industrial heating systems, and power switching for substantial machinery. Its specifications ensure reliable performance under significant electrical loads.

As a veteran-owned surplus parts distributor, Stanlo Automation is your trusted source for components like the Siemens 3RF2255-1AC35. We specialize in providing quality surplus industrial automation parts to support your maintenance and operational needs.

Technical specifications

Type	Semiconductor Relay
Phase	3-Phase
Current Rating	55 A (at 40°C)
Operating Voltage	48-600 V AC
Control Voltage	110 V AC
Blocking Voltage	1200 V
Terminals	Screw
Series	SIRIUS 3RF2
IP Rating	IP20

Common applications

Industrial Automation

Heavy-Duty Motor Control

Industrial Heating

Power Distribution

Large Machinery Control

Three-phase Load Switching

Compatible systems

Industrial control systems PLC outputs Three-phase motor starters

Also known as

Siemens 3RF2255-1AC35 SSR SIRIUS 3RF2 55A Relay 3RF22551AC35 Siemens

Replaces / compatible with

This part is part of the Siemens SIRIUS 3RF2 series. Specific replacements depend on the original application and its requirements.

Technical note

Expert tip

Adequate heatsinking is essential for the 3RF2255-1AC35 to maintain its rated performance and lifespan, especially when operating near its maximum current capacity.

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Frequently asked questions

What is the current rating and control voltage for the Siemens 3RF2255-1AC35 semiconductor relay?

The Siemens 3RF2255-1AC35 is a 3-phase semiconductor relay with a 55A current rating and an operating voltage range of 48-600V AC. It uses a 110V AC control supply voltage for operation.