Solid State Relays

Solid State Relays — New & Used

Solid state relays (SSRs) switch electrical loads using semiconductor switching rather than mechanical contacts — offering faster switching, longer life, silent operation, and high reliability for controls, automation, heating, motor control, and industrial systems.

At Surplus Select, we stock a variety of new and used OEM SSRs — including single-phase, three-phase, DC, AC, heat-sink mounted, panel-mount and DIN-rail compatible models. Surplus pricing lets automation specialists, OEMs and maintenance crews source quality relays affordably and maintain uptime.

Price Match — We match any authorized distributor on identical in-stock parts, so you can purchase SSRs at surplus pricing with confidence.

Trade-In Credit — Have quality new surplus items? Trade them in for store credit toward the parts you actually need.

Fast U.S. Shipping — Most orders ship same or next business day from our U.S. warehouse to keep your systems online.

Find Your Solid State Relay Fast (Search-First)

Search by model or part number (e.g., SSR 25 A 240 V, DC solid state relay, DIN-rail SSR module).
No part number? Try specs like “single-phase 240 V solid state relay”, “3-phase SSR 480 V”, or “DC input SSR 10 A”.
Need specific features? Add current rating, voltage type, mount type, or output type (AC/DC, zero-cross, random etc.).

Applications & Use Cases

Automation & control panels: Switch motors, heaters, solenoids and loads quietly and reliably with SSRs.
Industrial heating & thermal systems: Use SSRs to control heating elements, ovens, temperature zones and heat-sealing equipment.
Motor control & drives: Drive AC or DC motors without mechanical wear from contacts — ideal for frequent switching or high-cycle applications.
OEM builds & machinery upgrades: Integrate surplus SSRs into control systems, retrofit older relay-based panels or build custom automation rigs.
Maintenance & spares stocking: Keep replacement SSRs on-hand to minimize downtime when relays fail or systems require upgrades.

Why Buy Solid State Relays from Surplus Select

New & Used Options: Wide selection of OEM SSRs — single and three-phase, AC/DC, heat-sink and DIN-rail styles — at surplus pricing.
Performance & Reliability: Solid-state switching ensures long life, silent operation, and minimal maintenance compared to mechanical relays.
Cost-Effective Control Solutions: Surplus pricing helps you upgrade or replace relay modules without overspending.
Fast Shipping: Most orders ship same or next business day to keep your systems running smoothly.