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3RT20451KB443MA0
Siemens
COUPL. CONT.. AC3:37KW. 2NO+2NC. 24 V DC
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- "Coupl. cont..AC3 37KW/400v. 2NO+2NC. 24 V DC. 3-pole. 3NO. size s3. screw terminals. 1NO+1NC. varistor integr.. perm. mount. aux. switch. suitable for 2a plc-outputs"
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| Specification | Value |
|---|---|
| Connection type | Screw connection |
| suitable for series installation | true |
| min. rated control voltage Us with DC | 24 volt |
| Number of making contacts and main contacts | 3 |
| suitable for mounting onto standard rails | false |
| rated operational power AC-1 at 400 V | 82 kilowatt |
| Rated operating power with AC-3, 400 V | 37 kilowatt |
| Rated operating current Ie with AC-3, 400 V | 80 ampere |
| Power loss per pole, current-dependent [PlIp] | 5.3 watt |
| Power loss, static, current-independent [Pls] | 0.9 watt |
| Rated current [In] for the power loss specification | 80 ampere |
| Country of Origin | DE |
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*New items come with up to 24 month Obso Warranty
Our previously used items and repair options come with 12 months Obso Warranty.
"Super service! Everything was processed very quickly and competently and the personal support was excellent. I would always choose Obso Automation again! Many thanks for the great support." - MJ
Our previously used items and repair options come with 12 months Obso Warranty.
"Super service! Everything was processed very quickly and competently and the personal support was excellent. I would always choose Obso Automation again! Many thanks for the great support." - MJ
*Same & Next Day Delivery & Collection is available for stock from our UK and NL branches. Next-day delivery collection and 2 day delivery is available for stock sourced from our partners. In 90% of cases, we can deliver faster than the manufacturer’s ETA where required.
Standard options for delivery are also available where required.
"Professional, courteous and accurate. Obsolete part quoted same day and supplied next" - PT
Standard options for delivery are also available where required.
"Professional, courteous and accurate. Obsolete part quoted same day and supplied next" - PT
We are ISO 9001 accredited so you have peace of mind with your purchase.
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Part added for enquiry
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We don’t just process orders—we guarantee smooth delivery, full transparency, and zero headaches.
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Our 10,000+ customers trust us for a reason. Get your quote now and experience automation without risk, delays, or uncertainty.
