The SSR-430B solid state relay is a contactless electronic switch designed for industrial and automation control applications requiring reliability and extended service life. With a control input range of 3 to 32 V DC and a power output range of 24 to 480 V AC at 30 A switching current, this solid state relay suits temperature regulation systems as well as industrial machine automation. Its screw-mount design ensures sturdy integration into control panels and electrical enclosures.
Ideal For
- Temperature regulation (ovens, drying chambers, heating systems)
- PLC-driven industrial automation
- Control of resistive and mildly inductive loads in industrial environments
- Applications requiring silent, contact-bounce-free switching
- Systems needing galvanic isolation between control and power circuits
Key Features
- No mechanical contacts - zero wear, extended service life
- Optical isolation between control and power circuits
- Compatible with TTL, CMOS logic signals and PLC outputs (3-32 V DC)
- Wide output voltage range: 24 to 480 V AC - covers most North American and European power grids
- Silent operation - no arcing or switching noise
- Compact form factor with screw-mount design for easy integration
- Compatible with both 50 Hz and 60 Hz networks
The SSR-430B solid state relay is an excellent replacement for traditional electromechanical relays in high-cycle industrial applications. Its optical isolation between the control input and power output effectively shields control circuits from electrical disturbances generated by the load. The 30 A switching current rating makes it well suited for resistive and lightly inductive loads such as heating elements, lighting, and small motors.
Its compact enclosure - measuring 2-3/8 x 1-3/4 x 1-3/16 in. (6.0 cm x 4.5 cm x 3.0 cm) - and screw-mount system simplify installation in electrical cabinets and control panels. This contactless relay accepts any DC control voltage between 3 and 32 V DC, making it directly compatible with the vast majority of PLCs, microcontrollers, and control modules available on the market.
Technical Specifications
- Model: SSR-430B (SSRNC-430B)
- Type: Screw-mount solid state relay
- Input voltage (control): 3 to 32 V DC
- Output voltage (load): 24 to 480 V AC
- Switching current: 30 A
- Frequency: 50/60 Hz
- Isolation: Optical (between input and output)
- Dimensions: 2-3/8 x 1-3/4 x 1-3/16 in. (6.0 cm x 4.5 cm x 3.0 cm)
- Weight: 0.22 lb (100 g)
- Mounting type: Screw mount
Frequently Asked Questions (FAQ)
Q: Is this solid state relay compatible with a PLC (programmable logic controller)?
A: Yes. The 3 to 32 V DC input range is directly compatible with the logic outputs of most PLCs, microcontrollers (Arduino, Raspberry Pi, etc.) and industrial control modules.
Q: Can the SSR-430B be used to control a 240 V AC heating element?
A: Absolutely. The 24 to 480 V AC output range covers standard North American single-phase circuits (120 V and 240 V) and European networks (230 V), for currents up to 30 A.
Q: Is a heat sink required?
A: For high-current or continuous heavy-load use, adding a heat sink is strongly recommended to prevent overheating and ensure optimal relay service life.
Q: What is the difference between a solid state relay and an electromechanical relay?
A: A solid state relay has no moving mechanical parts. It uses semiconductor components for switching, eliminating contact wear, suppressing electrical arcing, and providing silent, faster switching compared to traditional electromechanical relays.
Q: Is this product sold individually?
A: Yes, the SSR-430B is sold individually (single unit).
