SIEMENS
SIEMENS 3RH21221AK60 Contactor 2NO/2NC 110/120VAC 10A
IEC control relay with 2NO/2NC contacts rated 10 A at 240 V AC, 110/120 V AC coil, DIN-rail or surface mount, IP20
- Reliable switching with 2NO/2NC contact configuration
- Handles up to 10 A at 240 V AC loads
- Operates on standard 110/120 V AC control voltage
- Compact S00 frame fits DIN rail or surface mounting
- Low 5.7 VA coil consumption reduces panel power draw
IEC Control Relay for Industrial Switching
The SIEMENS 3RH21221AK60 is an IEC control relay rated at 10 A with a 2NO/2NC contact configuration. It operates on a 110/120V AC coil and mounts on DIN rail or surface. Designed for panel builders and maintenance engineers who need reliable low-voltage switching in machinery and automation panels.
Replaces Older S00 Frame Relays
This unit fits the S00 frame size and is compatible with the Series 3RH21 range, making it a direct drop-in for worn or outdated relays of the same series. The jump is worth it when existing contacts show wear or when coil voltage must match a 110/120V AC control circuit without rewiring the panel.
Screw Terminals and IP20 Enclosure
Connections are made via screw terminals rated for the listed AC and DC contact ratings up to 690V AC and 600V DC. The IP20 enclosure provides finger-safe protection but is not suited for wet or dusty environments without additional housing. Power draw is 5.7 VA, so control transformers must supply sufficient VA for the coil.
Highlights
- Reliable switching with 2NO/2NC contact configuration
- Handles up to 10 A at 240 V AC loads
- Operates on standard 110/120 V AC control voltage
- Compact S00 frame fits DIN rail or surface mounting
- Low 5.7 VA coil consumption reduces panel power draw
Specifications
| Brand | SIEMENS |
|---|
Questions about this item
What DIN rail or surface mounting does the S00 frame contactor require?
The S00 frame is designed for DIN rail and surface mounting using the integral mounting feet.
How do I wire the 110/120 VAC coil and the 2NO/2NC contacts on the screw terminals?
Strip each wire, insert it into the corresponding screw terminal and tighten the screw securely; the coil terminals are marked A1 and A2, while the contact terminals follow the standard IEC numbering for 2NO/2NC.
When should the 10 A rated contacts be inspected or replaced?
Inspect the contacts periodically for pitting or overheating and replace the relay if the contact resistance rises or the switching reliability drops below the rated 10 A at 240 VAC.
Also in this aisle
People compared these
Same shelf, same checkout — eight coins and a 30-minute rate lock.
