Siemens
Siemens 3RF2120-1BG44-1KS0 Solid State Relay - 20A, 48-460V AC
Siemens 3RF2120-1BG44-1KS0 Solid State Relay
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Same-day dispatch
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Veteran-owned
CAGE: 9NK75
Zero-point switching
1-pole
48-460V AC operational voltage
20A current rating
Compact 22.5mm width
IP20 protection
Product description
The Siemens 3RF2120-1BG44-1KS0 is a single-phase solid-state relay designed for reliable switching in industrial applications. It operates with zero-point switching for reduced interference and features a compact 22.5 mm width.
This relay is suitable for various industries including motor control, HVAC systems, and general automation where precise and efficient switching is required. Its robust design ensures performance in demanding environments.
Stanlo Automation, a veteran-owned business, offers this Siemens solid-state relay with a commitment to quality and customer service. We ensure that you receive the right part for your needs, backed by our industry expertise.
Technical specifications
| Type | Solid-state relay |
| Poles | 1 |
| Current Rating | 20 A |
| Voltage Rating (AC) | 48-460 V |
| Voltage Rating (DC) | 24 V |
| Switching Type | Zero-point switching |
| Width | 22.5 mm |
| Protection Class | IP20 |
Common applications
Motor control
HVAC systems
Industrial automation
Power control
Lighting control
General switching applications
Compatible systems
General industrial control systems
Also known as
Siemens 3RF2120-1BG44-1KS0 relay, Siemens SIRIUS 3RF21, Solid-state contactor
Replaces / compatible with
This solid-state relay is designed to replace traditional electromechanical relays in applications requiring frequent switching or reduced electrical noise.
Technical note
Expert tip
Ensure adequate heat dissipation by mounting on a suitable heat sink, especially when operating at maximum load.What happens next?
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Frequently asked questions
What are the key specifications of the Siemens 3RF2120-1BG44-1KS0?
The Siemens 3RF2120-1BG44-1KS0 is a 1-pole solid-state relay with a 20A current rating and an operating voltage range of 48-460V AC. It features zero-point switching and has an IP20 protection class.