DC-DC SSR
DENKI SEIGYO – DSR1-_A-DD Single Phase (DC-DC) Solid State Relay
Category: Solid State Relay / DC-DC SSR
Manufacturer: Denki Seigyo
Product Overview
The Denki Seigyo DSR1-_A-DD is a single-phase DC-controlled DC-output solid state relay (SSR) designed for precision control and long-life operation in DC switching systems.
Built using high-efficiency MOSFET output technology, this relay ensures fast, silent, and contactless switching, making it ideal for automation, motion control, and DC distribution applications.
Its compact design, wide operating voltage range, and rugged industrial housing provide stable performance even under continuous high-load conditions.
Key Characteristics
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DC input and DC output design for pure DC switching systems
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MOSFET-based output stage ensures fast, noise-free operation
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Silent, arc-free, and spark-free performance
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Low ON-state voltage drop for efficient energy transfer
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High input-output isolation for safety and reliability
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LED input indicator for operational visibility
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Compact and maintenance-free design
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Long electrical and mechanical life – no moving parts
Versatile and Reliable Industrial SSR
The Denki Seigyo DSR1-_A-DD delivers precise, reliable, and fast DC load switching for industrial control and automation systems.
It supports wide input control voltage (3–32VDC) and output voltage ranges up to 220VDC, making it suitable for battery systems, solar power, robotics, and process automation.
Designed for high durability and low maintenance, this SSR provides safe, efficient switching performance with full CE and RoHS compliance.
DC-DC SSR
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | DSR1-_A-DD |
| Type | Single Phase Solid State Relay (DC-DC) |
| Manufacturer | Denki Seigyo |
| Control Type | DC Input / DC Output |
| Input Control Voltage | 3–32VDC |
| Input Current | ≤ 15 mA (typical) |
| Output Load Voltage | 5–220VDC (model dependent) |
| Rated Load Current | 2A / 5A / 10A / 20A / 40A |
| ON-State Voltage Drop | ≤ 1.5V (at rated load) |
| OFF-State Leakage | ≤ 1 mA |
| Turn-on Time | ≤ 1 ms |
| Turn-off Time | ≤ 1 ms |
| Isolation Voltage | 2500VAC (Input–Output, 1 min) |
| Insulation Resistance | ≥ 100 MΩ at 500VDC |
| Surge Current (10ms) | 10× rated current |
| Control Polarity | Unidirectional or bidirectional (model dependent) |
| Cooling Method | Natural convection / Forced cooling for high load |
| LED Indicator | Built-in (Input ON indication) |
| Mounting Method | Panel / Heat sink mount |
| 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. 58 × 45 × 23 mm |
| Weight | Approx. 120 g |
| Compliance | CE, RoHS |
Key Features
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DC input and DC output with MOSFET control
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Fast, noise-free, and arc-free switching
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Low power consumption and high efficiency
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Compact, lightweight, and easy to mount
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Integrated LED for input indication
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High isolation voltage and surge endurance
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Durable, long-life solid-state design
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Shock- and vibration-resistant housing
Applications
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DC motor and solenoid control
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PLC output interface and signal switching
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Battery management and renewable energy systems
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Process automation and instrumentation circuits
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Power distribution and protection systems
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Robotics, conveyor systems, and motion control
Ordering Information
| Model | Input Voltage | Output Voltage | Load Current | Mounting Type | Indicator Option |
|---|---|---|---|---|---|
| DSR1-05A-DD | 3–32VDC | 5–60VDC | 5A | Panel / Heat sink | LED |
| DSR1-10A-DD | 3–32VDC | 5–100VDC | 10A | Panel / Heat sink | LED |
| DSR1-20A-DD | 3–32VDC | 5–200VDC | 20A | Panel / Heat sink | LED |
| DSR1-40A-DD | 3–32VDC | 5–220VDC | 40A | Panel / Heat sink | LED |
Product Summary
The Denki Seigyo DSR1-_A-DD DC-DC Solid State Relay delivers precise, rapid, and reliable DC switching performance using MOSFET output technology.
With fast response, low heat generation, and high isolation, it ensures long-term reliability for automation, control, and power applications.
Compact, durable, and maintenance-free, it is the ideal choice for modern DC load management, offering CE and RoHS compliance with Denki Seigyo’s proven reliability.
Wiring Diagram
