Description:
What You Get:
1 × Solid State Relay (SSR-40VA)
1 × Heat Sink
1 × Potentiometer
1 × Knob
2 × Screws
Product Details:
Model: Solid State Relay SSR-40VA
Resistance: 500KΩ, 2W
Input Voltage Range: 24–480VAC
Current / Frequency: 40A, 50/60Hz
Dimensions (approx.): 58 × 45 × 32 mm / 2.3" × 1.8" × 1.26" (L×W×T)
Net Weight: 116g
Material: Metal, Plastic, Electronic Components
Features:
No spark or noise during switching
High-speed switching
Corrosion-resistant and moisture-proof
Anti-vibration design
Long lifespan and high reliability
Excellent electromagnetic compatibility
Applications:
Ideal for automatic process control systems
Essential component for temperature controllers and industrial machinery control systems
Product Overview:
Single-Phase Solid State Relay | Voltage Regulator
Input Resistance: 470K–560KΩ
Output Voltage: 24–480VAC
Maximum Load Current: 40A
(Note: The stated current is the maximum load current, not the rated current)
SSR series solid state relays (screw terminal connection) feature high mechanical strength, impact and vibration resistance, and low input current requirements. They are compatible with computer-based digital control circuits and serve as upgraded alternatives to traditional AC/DC contactors.
Designed for use in harsh environments, these relays are suitable for areas with high humidity, corrosive conditions, and requirements for explosion-proof or light-proof operations, as well as frequent on/off switching.
Installation Instructions:
Clean the back surface of the SSR to remove any dust.
Apply a small amount of thermal grease to the back of the SSR.
Spread the grease using a brush.
Ensure the grease is evenly applied across the surface.
Notice:
The solid-state relay contains a semiconductor switch, which operates without physical contact. When tested with a multimeter using diode or resistance mode, it may show a high-impedance state (multimeter red light on), which is normal.
Testing Tip:
To properly test the SSR’s switching function, a load is required. Using an incandescent lamp as a dummy load is a simple and effective method to check continuity.