AC-AC SSR
DENKI SEIGYO – DSR1-_A-AA Single Phase (AC-AC) Solid State Relay
Category: Solid State Relay / Single Phase SSR
Manufacturer: Denki Seigyo
Product Overview
The Denki Seigyo DSR1-_A-AA is a single-phase AC control solid state relay (SSR) designed for contactless switching of AC loads in automation, heating, lighting, and motor control applications.
Engineered with a zero-cross or random-turn-on control circuit, it ensures smooth and silent operation, high reliability, and long service life without mechanical wear.
Its compact industrial housing allows easy installation on panels or heat sinks, making it an ideal replacement for traditional electromagnetic relays.
Key Characteristics
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Single-phase AC input and output for reliable load control
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Zero-cross or random turn-on options for precise switching
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Silent, spark-free operation with no mechanical wear
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High dielectric strength and insulation reliability
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Built-in LED indicator for input signal status
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Fast response and low power consumption
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Compact, maintenance-free design with easy panel mounting
Versatile and Reliable Industrial SSR
The Denki Seigyo DSR1-_A-AA offers fast, safe, and reliable switching performance for AC loads in automation systems, lighting circuits, and temperature control equipment.
Its advanced semiconductor design ensures low switching noise, high surge endurance, and consistent performance under continuous operation.
Ideal for resistive, inductive, and motor loads, it combines efficiency, safety, and durability in one robust unit.
AC-AC SSR
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | DSR1-_A-AA |
| Type | Single Phase Solid State Relay (AC-AC) |
| Manufacturer | Denki Seigyo |
| Control Type | AC Input / AC Output |
| Input Control Voltage | 80–250VAC (Standard) |
| Input Current | ≤ 15 mA (typical) |
| Output Load Voltage | 24–480VAC (AC-AC) |
| 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 cooling recommended for high load |
| 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. 62 × 45 × 24 mm (varies by current rating) |
| Weight | Approx. 150–250 g (depending on model) |
| Compliance | CE, RoHS |
Key Features
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Compact single-phase SSR for AC load control
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Zero-cross and random-on control models
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LED indicator for operation monitoring
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No contact wear or mechanical noise
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High surge immunity and low heat generation
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Stable, long-life semiconductor design
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Easy installation with screw terminals
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Suitable for resistive and inductive loads
Applications
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Industrial heating systems and ovens
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Lighting and lamp control
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HVAC and compressor systems
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Process control and automation panels
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Machinery motor start and control circuits
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Power distribution and switching systems
Ordering Information
| Model | Input Voltage | Output Voltage | Rated Current | Control Type | Indicator |
|---|---|---|---|---|---|
| DSR1-10A-AA | 80–250VAC | 24–480VAC | 10A | Zero-cross | LED |
| DSR1-25A-AA | 80–250VAC | 24–480VAC | 25A | Zero-cross | LED |
| DSR1-40A-AA | 80–250VAC | 24–480VAC | 40A | Zero-cross | LED |
| DSR1-60A-AA | 80–250VAC | 24–480VAC | 60A | Random-on | LED |
| DSR1-80A-AA | 80–250VAC | 24–480VAC | 80A | Random-on | LED |
| DSR1-100A-AA | 80–250VAC | 24–480VAC | 100A | Zero-cross | LED |
Product Summary
The Denki Seigyo DSR1-_A-AA Single Phase Solid State Relay provides contactless, high-speed, and reliable AC load switching using AC control signals.
With zero-cross technology, long operational life, and industrial-grade insulation, it ensures safe, quiet, and maintenance-free operation.
Ideal for heating, lighting, and industrial control systems, the DSR1-_A-AA offers superior performance, compact design, and Denki Seigyo reliability for modern automation needs.
Wiring Diagram
