Solid State Relays & SCR Power Modules
BSSR-DA Single Phase Solid State Relay DC to AC
BSSR-DA Series Solid State Relay is a single-phase DC-to-AC solid state relay designed for industrial heating, motor control, temperature control systems, automation equipment, and switching applications. It features 3-32VDC control input, 24-480VAC load output, fast switching, stable performance, compact design, and good heat dissipation.
- DC input and AC output solid state relay
- Control voltage: 3–32VDC
- Load voltage: 24–480VAC
- Current range: 10A to 120A available
- Fast switching response, ≤10ms
- Stable operation and long service life
- Compact structure and easy installation
- Suitable for resistive and inductive loads
- Heat sink recommended for loads above 10A
- Widely used with temperature controllers and heating systems
- Stock / sample dispatch
- 3–5 working days
- Warranty
- 12 months
- OEM
- Supported
- Shipping
- Worldwide export
Technical specifications
| Product Type | DC-controlled AC Solid State Relay |
|---|---|
| Load Current | 10A, 25A, 40A, 50A, 60A, 75A, 80A, 100A, 120A |
| Load Voltage | 24–480VAC |
| Control Voltage | 3–32VDC |
| Control Current | DC 3–25mA |
| On-state Voltage Drop | ≤1.5V |
| Off-state Leakage Current | ≤2mA |
| On-off Time | ≤10ms |
| Dielectric Strength | 2500VAC |
| Insulation Resistance | 1000MΩ |
| Ambient Temperature | −30°C to +75°C |
| Mounting Method | Screw mounting |
| Work Indicator | LED |
| Weight | 80g |
BSSR Selection Guide
Dimensions & Wiring Diagram
Popular models
All BSSR-DA models share the same 3–32VDC control input and 24–480VAC load voltage; only the rated load current differs.
| Model | Load Current | Control Voltage | Load Voltage |
|---|---|---|---|
| BSSR-10DA | 10A | 3–32VDC | 24–480VAC |
| BSSR-25DA | 25A | 3–32VDC | 24–480VAC |
| BSSR-40DA | 40A | 3–32VDC | 24–480VAC |
| BSSR-50DA | 50A | 3–32VDC | 24–480VAC |
| BSSR-60DA | 60A | 3–32VDC | 24–480VAC |
| BSSR-75DA | 75A | 3–32VDC | 24–480VAC |
| BSSR-80DA | 80A | 3–32VDC | 24–480VAC |
| BSSR-100DA | 100A | 3–32VDC | 24–480VAC |
| BSSR-120DA | 120A | 3–32VDC | 24–480VAC |
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SSR-DA Series single-phase solid state relays from Beijing Strong Electric offer fast, silent zero-cross switching for AC resistive loads. Control input is 3–32VDC, load output 24–480VAC, with rated current from 10A to 120A. Typical uses are heating equipment, ovens, lighting circuits, packaging machines and temperature control systems.
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TSR Three Phase Solid State Relay — TSR-80DA, 10A–100A
TSR Three Phase Solid State Relay is a three-phase, DC-controlled AC solid state switching module for industrial heating and automation equipment. It accepts a 4–32VDC control signal, switches 24–380VAC loads, and is available from 10A to 100A (representative model TSR-80DA).
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SSR3 Three Phase Solid State Relay — 10A–200A
SSR3 Three Phase Solid State Relay is an industrial-grade three-phase, DC-controlled AC solid state switching module. It accepts a 3–32VDC control signal, switches 24–480VAC loads, and is available from 10A to 200A (representative model SSR3-25DA).
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BSSR-40DA Single Phase SSR — DC to AC, 40A
BSSR-40DA is a single-phase DC-to-AC solid state relay rated at 40A, with 3–32VDC control input and 24–480VAC load output. It is used with PID temperature controllers on industrial heating, packaging, extrusion and automation equipment, offering fast zero-cross switching, silent operation and long service life. A matched heat sink is required at 40A continuous load.
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