Surge Protectors

RECOM DC surge protectors are engineered to safeguard sensitive power systems against transient overvoltages and surge events common in industrial, railway, and defense environments. These high-performance surge protection modules act as a critical defense layer, absorbing high-energy transients that would otherwise damage downstream DC/DC converters or sensitive control electronics.

Designed specifically for industrial DC applications, the RSP series supports the stable operation of power supplies and distributed DC networks in electrically noisy environments. These modules are essential for meeting stringent transient immunity standards—such as RIA12 and NF F 01-510 for railway applications—where equipment must withstand surges up to 385VDC. Their compact, PCB-mount or chassis-mount construction allows for easy integration into existing architectures, ensuring long-term reliability and operational continuity.

Browse the product table below to select the right surge protection solution based on clamping voltage, surge rating, and compliance requirements.
Power (W)
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  • Protections
      Series Power (W) Vin (V) Main Vout (V) Mounting Type Package Style
    1 RECOM | RSPxxx-168 Series | DC/DC, THT
    20, 150, 300 40 - 160 168 THT DIP24, 1.6"x1"
    2 RECOM | RSP45-M Series | DC/DC, THT, 45W, Single Output
    45 9 - 36 40 THT 1.6"x1"
    3 RECOM | RSP150-M Series | DC/DC, THT, 150W, Single Output
    150 9 - 36 40 THT 2.28"x1.45"
    4 RECOM | RSP250-M Series | DC/DC, THT, 250W, Single Output
    250 9 - 36 40 THT 2.28"x1.45"

    Frequently Asked Questions

    A DC surge protector acts as a transient voltage suppressor, shielding electronic systems and power supplies from high-energy spikes. These transients are typically caused by lightning strikes, heavy inductive switching events, or external electrical disturbances on the power line.
    Industrial environments are often electrically noisy. Without industrial surge protection, voltage spikes can exceed the maximum input ratings of DC/DC converters, leading to component failure. Integrating a protection module improves overall system reliability and prevents costly, unexpected downtime.
    RECOM’s surge protection modules are widely used in industrial automation, railway control cabinets, telecommunications, and defense applications. They are especially critical in distributed DC networks where equipment is exposed to long cable runs or external power feeds.
    Yes. By clamping damaging voltage transients to a safe level, these devices reduce the cumulative electrical stress on sensitive semiconductors and capacitors. This leads to a significantly longer operational lifespan for all connected equipment.

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