Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
RM1A40A100 – SSR ZS 400V 100A 24-265 VAC LED
Carlo Gavazzi RM1A40A100 solid state relay, a 100 A single-phase zero-cross switching relay designed for industrial AC load control applications.
£89.49
Why Choose the Carlo Gavazzi RM1A40A100 Solid State Relay?
The Carlo Gavazzi RM1A40A100 is a high-performance single-phase solid state relay (SSR) designed for reliable electronic switching of AC loads in industrial automation, heating control and power management applications. As part of the trusted Carlo Gavazzi RM1A solid state relay series, it provides fast, silent and maintenance-free switching with zero-cross technology for dependable industrial operation.
This panel-mounted solid state relay combines compact construction with high-current switching capability and integrated overvoltage protection. Its zero-cross switching design helps minimise electrical interference and reduce stress on connected loads, making it suitable for demanding industrial control environments.
With a rated current of 100 A AC, an operating voltage range of 42–440 V AC and a 20–280 V AC / 22–48 V DC control input, the RM1A40A100 is ideal for controlling industrial heaters, machinery and automated process equipment requiring dependable AC load switching.
Key Advantages
- Compact solid state relay designed for industrial switching applications.
- 100 A AC rated current for high-power single-phase load control.
- Zero-cross switching technology reduces electrical noise and switching stress.
- 20–280 V AC / 22–48 V DC control input for flexible automation integration.
- Integrated overvoltage protection improves operational reliability.
- Panel-mounted design for straightforward installation inside control cabinets.
Key Features
- Carlo Gavazzi RM1A solid state relay series.
- 100 A AC-51 rated current.
- 30 A AC-53a rated current.
- 42–440 V AC operating voltage range.
- 20–280 V AC control voltage.
- 22–48 V DC control voltage.
- Zero-cross output switching for reduced electrical disturbance.
- Single-pole panel-mounted design with screw terminal connections.
Reliable Electronic Switching for Industrial Applications
Solid state relays such as the Carlo Gavazzi RM1A40A100 provide fast electronic switching without mechanical contacts, helping extend service life and reduce maintenance requirements compared with traditional electromechanical relays. Zero-cross switching ensures smoother operation when controlling AC loads.
The RM1A series is designed for automation engineers and electrical panel builders requiring dependable switching solutions. Its high-current capability, integrated protection features and flexible AC/DC control inputs allow straightforward integration into modern industrial systems.
Typical Applications
- Industrial heating and temperature control systems.
- Industrial ovens and thermal processing equipment.
- Process automation equipment.
- Control panels and electrical cabinets.
- Machinery and OEM automation equipment.
- High-current AC switching applications.
Technical Specifications
Tick the specs you need, then view products that match.
| Device Type | Solid State Relay | |
|---|---|---|
| Terminal Type | Screw | |
| Switching Current (A) | 100 A | |
| Mounting Type | Panel | |
| Coil / Supply Voltage | 110 V AC, 115 V AC, 120 V AC, 208 V AC, 220 V AC, 230 V AC, 240 V AC, 380 V AC, 400 V AC, 415 V AC, 440 V AC, 48 V AC | |
| Manufacturer | Carlo Gavazzi | |
| Series | RM1A Solid State Relays | |
| Model | RM1A40A100 | |
| Product type | Solid state relay (SSR) | |
| Switching mode | Zero cross | |
| Number of poles | 1 | |
| Number of phases | 1-phase | |
| Rated current AC-51 | 100 A | |
| Rated current AC-53a | 30 A | |
| Operating voltage | 42–440 V AC | |
| Control voltage AC | 20–280 V AC | |
| Control voltage DC | 22–48 V DC | |
| Power connection | Screw terminal with captive clamp | |
| Mounting type | Panel mounting | |
| Protection | Built-in overvoltage protection |
Frequently Asked Questions
What is the Carlo Gavazzi RM1A40A100 used for?
The RM1A40A100 is a solid state relay used for switching single-phase AC loads in industrial automation, heating and control applications.
What current rating does this solid state relay support?
The relay supports a rated operating current of 100 A AC-51 for suitable AC loads.
What voltage supply can the RM1A40A100 switch?
The relay is designed for AC loads operating between 42–440 V AC.
What control voltage is required?
The RM1A40A100 accepts either a 20–280 V AC or 22–48 V DC control input.
How is the relay installed?
The relay is designed for panel mounting inside electrical control systems and cabinets.
Trusted by Industrial Automation Engineers
Carlo Gavazzi solid state relays are widely used in industrial control systems to provide reliable, efficient and long-lasting electronic switching performance.
