Solid State Relay 10A–120A DC-AC AC-AC DC-DC SSR | 24-480VAC
Solid State Relay 10A–120A DC-AC AC-AC DC-DC SSR | 24-480VAC
CKCTINNER Solid State Relay – Reliable Non-Contact Switching
Upgrade your electrical control systems with the CKCTINNER Solid State Relay (SSR) — a high-performance, non-contact switching solution available in a wide range of current ratings from 10A to 120A. Whether you need DC-AC, AC-AC, or DC-DC switching, this single-phase SSR delivers fast, silent, and spark-free operation for industrial, commercial, and DIY applications.
Unlike traditional mechanical relays, solid state relays use semiconductor components to switch loads with zero moving parts — resulting in longer service life, reduced electromagnetic interference, and quieter operation. Rated for output voltages of 24–480VAC, this SSR is compatible with a broad range of systems and equipment.
Made in Mainland China.
Key Features
- Multiple current ratings: 10A, 25A, 40A, 60A, 80A, 100A, and 120A — choose the right size for your application
- Versatile switching modes: DC-AC, AC-AC, and DC-DC configurations available
- Wide output voltage range: 24–480VAC for broad compatibility
- Non-contact operation: No mechanical contacts means no arcing, no sparking, and drastically reduced wear
- Sealed protective enclosure: Guards internal components against dust and moisture ingress
- SPDT contact arrangement: Standard single-pole double-throw design for flexible wiring
- General purpose use: Ideal for heating systems, motor control, lighting, industrial automation, and more
- No hazardous chemicals: RoHS-compliant, contains no high-concern substances
Specifications
- Brand: CKCTINNER
- Model: SSR
- Contact Arrangement: SPDT
- Current Ratings: 10A / 25A / 40A / 60A / 80A / 100A / 120A
- Output Voltage: 24–480VAC
- Switching Type: DC-AC / AC-AC / DC-DC
- Phase: Single Phase
- Protection: Sealed
- Application: General Purpose
- Origin: Made in Mainland China
Compatible Applications
This SSR is well-suited for a wide variety of projects and installations, including:
- Industrial heating and temperature control systems
- CNC machine and motor control panels
- Lighting control and dimming circuits
- PLC and automation control boards
- 3D printer heated beds and extruder control
- DIY electronics and maker projects
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Frequently Asked Questions
Q: What is a solid state relay and how does it differ from a mechanical relay?
A: A solid state relay (SSR) switches electrical loads using semiconductor devices (such as thyristors or MOSFETs) rather than physical moving contacts. This means no arcing, no sparking, silent operation, faster switching speeds, and a much longer operational lifespan compared to traditional mechanical relays.
Q: Which current rating should I choose for my application?
A: Select a current rating that is at least 1.5–2× the maximum load current of your application. For example, if your load draws 20A, choose the 40A SSR. This safety margin helps prevent overheating and extends the life of the relay. Current options available: 10A, 25A, 40A, 60A, 80A, 100A, and 120A.
Q: Does this solid state relay require a heat sink?
A: For higher current ratings (typically 40A and above), mounting the SSR on an adequately sized aluminum heat sink is strongly recommended. SSRs generate heat during operation, and proper thermal management ensures reliable, long-term performance.
Q: Is this SSR compatible with DC control signals (e.g., from a microcontroller or PLC)?
A: Yes. Depending on the variant selected (DC-AC, AC-AC, or DC-DC), this SSR can be triggered by low-voltage DC control signals, making it ideal for use with PLCs, Arduino, Raspberry Pi, and other microcontroller platforms.