Product Overview
Used Omega SSR240DC25 Solid State Relay and Heatsink Assembly
The Omega SSR240DC25 is an industrial-grade solid state relay (SSR) designed to control high-power AC loads using a low-power DC control signal. This unit comes mounted on a finned aluminum heatsink for optimal thermal dissipation and continuous 25-amp operation. Tested and clean, this assembly offers a reliable switching solution for automation and process control systems.
Product Condition
Used, clean, and in excellent physical condition. The relay and heatsink show minimal handling wear. Terminals and mounting hardware are intact.
Product Overview
Omega’s solid state relays are known for their durability, silent operation, and dependable isolation between control and load circuits. The SSR240DC25 combines a 3–32 VDC control input with a 24–280 VAC output, providing precise and long-life switching for resistive or inductive loads. Paired with an Omega-designed heat sink, it’s built for continuous-duty performance in demanding environments.
Key Features
- Model SSR240DC25 – Solid state relay with integrated aluminum heatsink
- Control input: 3–32 VDC compatible with logic or controller outputs
- Load output: 24–280 VAC rated, 25 A continuous load capacity
- SPST-NO (single-pole, single-throw normally open) configuration
- Switching time: approximately 20–30 ms (on/off)
- 4000 V RMS input-to-output isolation for operator and equipment safety
- Solid state design – no moving parts, silent and vibration-free operation
- Panel-mount construction with factory-attached heatsink for proper cooling
- Operating temperature range: −20 °C to 80 °C
- Ideal for resistive loads, lighting, and heating control
Applications
- Industrial automation and machine control systems
- Resistive and infrared heater switching
- Lighting and motor control circuits
- Process temperature control and power distribution panels
- PLC-driven output modules or signal conditioning systems
- Research and laboratory equipment requiring low-noise switching
- Retrofit and replacement in older mechanical relay systems
Frequently Asked Questions
What does the SSR240DC25 control?
It switches AC loads up to 25 A, using a DC control signal of 3–32 VDC from a PLC, controller, or logic output.
Why is a heatsink included?
The heatsink helps dissipate heat during continuous or high-load operation, ensuring the relay maintains rated performance and lifespan.
Is this relay suitable for inductive loads?
Yes, but users should ensure appropriate snubber protection or load suppression for inductive applications such as motors.
Can this SSR replace mechanical relays?
Yes. It provides the same switching function without moving parts, offering silent, bounce-free operation and extended service life.
What’s the isolation rating between control and load?
The relay provides 4000 V RMS isolation, protecting control electronics from high-voltage transients.
Omega’s SSR240DC25 bridges simplicity and endurance - solid, silent, and engineered to last. This unit’s working life isn’t over; it’s simply ready for another control panel and a new process to drive.
