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DENKI SEIGYO 3 PHASE (DC-AC) SSR- DSR-3DA-_A

  • DENKI SEIGYO 3 PHASE (DC-AC) SSR- DSR-3DA-_A
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    • DENKI SEIGYO 3 PHASE (DC-AC) SSR- DSR-3DA-_A

    DENKI SEIGYO – DSR-3DA-_A Three Phase (DC-AC) Solid State Relay

    Category: Solid State Relay / Three-Phase SSR
    Manufacturer: Denki Seigyo

    Product Overview

    The Denki Seigyo DSR-3DA-_A is a three-phase DC-controlled AC-output Solid State Relay (SSR) designed for high-efficiency and long-life industrial switching applications.
    Built with advanced semiconductor technology, this SSR provides silent, contactless switching with fast response times, ensuring reliable operation in automation, heating, motor control, and industrial power systems.

    Engineered with zero-cross or random-turn-on control options, the DSR-3DA-_A delivers smooth switching performance, extended electrical lifespan, and superior resistance to shock, vibration, and electrical interference.

    Key Characteristics

    • DC control input with AC output for precise switching of three-phase loads

    • Zero-cross and random turn-on options for optimized performance

    • Silent and arc-free switching – eliminates mechanical wear and noise

    • Built-in LED indicator for easy operation monitoring

    • Wide control voltage range and high dielectric strength

    • Compact, panel-mount design with screw terminals for secure wiring

    • Suitable for resistive, inductive, and motor loads

    • Maintenance-free operation and long service life

    Versatile and Reliable Industrial SSR

    The Denki Seigyo DSR-3DA-_A series provides stable, high-speed, and contactless switching for three-phase AC loads using DC control signals.
    Its robust construction and high surge capability make it an excellent choice for industrial automation systems, temperature control, and motor drives.
    Designed for continuous operation, it ensures high reliability and safe performance even under demanding load conditions.

    For more details please check datasheet. Dsr3- Three phase (dc-ac) ssr

    Category:
    DENKI SEIGYO 3 PHASE (DC-AC) SSR- DSR-3DA-_A
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    Technical Specifications

    Parameter Specification
    Model DSR-3DA-_A
    Type Three Phase Solid State Relay (DC-AC)
    Manufacturer Denki Seigyo
    Control Type DC Control Input → AC Output
    Input Control Voltage 3–32VDC (standard)
    Input Current ≤ 15 mA (typical)
    Output Load Voltage 24–480VAC (three-phase)
    Rated Load Current 10A / 25A / 40A / 60A / 80A / 100A
    Frequency Range 47–63Hz
    Turn-on Type Zero-cross or Random-on (optional)
    Turn-on Time ≤ 10 ms (Zero-cross)
    Turn-off Time ≤ 10 ms
    ON-State Voltage Drop ≤ 1.6V (at rated load)
    OFF-State Leakage ≤ 10 mA
    Dielectric Strength 2500VAC (Input–Output)
    Insulation Resistance ≥ 100 MΩ at 500VDC
    Surge Current 10× rated current (10 ms)
    Cooling Method Natural / Forced air cooling
    LED Indicator Built-in (Input ON indication)
    Mounting Method Panel / Heat sink mounting
    Ambient Temperature -25°C to +80°C
    Storage Temperature -30°C to +100°C
    Humidity Range 45–85% RH (non-condensing)
    Housing Material Flame-retardant thermoplastic
    Dimensions (L × W × H) Approx. 105 × 75 × 38 mm
    Weight Approx. 280 g
    Compliance CE, RoHS

    Key Features

    • Three-phase AC load switching with DC control input

    • Zero-cross or random-on switching types

    • Integrated LED for input indication

    • Low leakage current and fast switching speed

    • High dielectric strength for industrial safety

    • Panel or heat-sink mountable compact design

    • No mechanical wear – silent and long-lasting operation

    • Reliable performance for resistive, inductive, or motor loads

    Applications

    • Industrial automation systems

    • Heater and furnace control

    • Motor and pump control (three-phase)

    • Process control systems

    • Power distribution panels

    • HVAC and temperature control systems

    Ordering Information

    Model Control Voltage (DC) Output Voltage (AC) Rated Load Current Control Type Indicator
    DSR-3DA-25A 3–32VDC 24–480VAC 25A Zero-cross LED
    DSR-3DA-40A 3–32VDC 24–480VAC 40A Zero-cross LED
    DSR-3DA-60A 3–32VDC 24–480VAC 60A Random-on LED
    DSR-3DA-80A 3–32VDC 24–480VAC 80A Random-on LED
    DSR-3DA-100A 3–32VDC 24–480VAC 100A Zero-cross LED

    Product Summary

    The Denki Seigyo DSR-3DA-_A Three Phase Solid State Relay (DC-AC) delivers fast, reliable, and maintenance-free switching for industrial AC loads controlled by DC signals.
    With high load current capacity, excellent thermal stability, and silent operation, it is ideal for heaters, motors, and process automation equipment.
    Engineered to meet CE and RoHS standards, the DSR-3DA-_A ensures long-term performance, superior reliability, and industrial-grade safety in every application.

    Wiring Diagram

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