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Siemens Sirius Innovation 3RH2 Contactor, 4NO (Auxiliary), 10 A, 110 V dc Coil

3RH2140-1BF40 Siemens Sirius Innovation 3RH2 Contactor, 4NO (Auxiliary), 10 A, 110 V dc Coil
3RH2140-1BF40
3RH2140-1BF40
3RH2140-1BF40 Siemens Sirius Innovation 3RH2 Contactor, 4NO (Auxiliary), 10 A, 110 V dc Coil
Siemens

Product Information

Normal State Configuration:
4NO
Contact Current Rating:
10 A
Series:
3RH2
Coil Voltage:
110 V dc
Length:
57.5mm
Width:
45mm
Depth:
73mm
Number Of Auxiliary Contacts:
4
Range:
SIRIUS
Contact Voltage Rating:
690 V ac
Number of Poles:
4
Terminal Type:
Screw
RoHs Compliant
Checking for live stock

The Siemens SIRIUS 3RH2140‑1BF40 Auxiliary Contactor Relay is the ideal UK choice for robust control in DC‑powered automation systems. Featuring a 110 V DC coil and four normally‑open auxiliary contacts (frame size S00), it delivers reliable switching in industrial environments. Its compact, DIN‑rail mountable design with screw terminals simplifies integration in control panels across manufacturing, utilities and machinery sectors.

Why Buy the Siemens Siemens Auxiliary Contactor Relay?

This contactor relay delivers enduring performance with up to 30 million mechanical switching cycles and high operational reliability even under shock and voltage stress. The 110 V DC coil draws just 4 W for both closing and holding, for energy-efficient operation and minimal heat generation. Its external finger‑safe IP20 protection and screw‑fix DIN‑rail mounting make it easy to install and service in UK panels.

Product Features and Benefits

  • Ultra‑durable, with a typical mechanical life of 30 million cycles, ensuring minimal downtime.
  • Energy efficient, consuming just 4 W on the 110 V DC coil.
  • Switching currents up to 10 A at AC‑12/15 ratings across 230–690 V lines.
  • Compact S00 frame size with screw‑terminal connections for quick DIN‑rail installation.
  • Operates in extreme conditions: from –25 °C to +60 °C, with a humidity tolerance of up to 95%.
  • Snap-on auxiliary blocks available to expand contacts if needed.

Applications Across Different Fields

  • Industrial control panels for motor starters, solenoid valves and safety circuits
  • Machine automation systems in factories and production lines
  • Renewable energy installations, with DC-powered control systems (e.g. solar inverters)
  • Building management systems require reliable relay switching
  • Marine or offshore applications where DC-operated auxiliary control is standard
  • OEM and panel-builder installations, minimising footprint and maximising reliability

pdf icon
Siemens Sirius Migration(Technical Reference)
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Solutions for frequent switching or soft starting(Technical Reference)
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Sirius Innovations Switching Devices(Technical Reference)
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Sirius Innovation Accessory Guide(Technical Reference)
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Environmental Product Declaration - Overview(Technical Reference)
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Sirius Innovation Catalogue(Technical Reference)
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Sirius: Migrating From Classic to Innovation(Technical Reference)
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Environmental Product Declaration(Technical Reference)
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Datasheet_3RH2140-1BF40(Technical Reference)
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Basic Information(Technical Reference)

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FAQs

Yes. We ship 3RH2140-1BF40 Internationally to many countries around the world.
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We accept all major payment methods for all products including ET13964345. Please check your shopping cart at the time of order.
We use our internationally recognized delivery partners UPS/DHL. Collection of ET13964345 can also be arranged for the customer by international shipments through contacting our customer support team. Additionally, you can also search"Siemens" products on our website by using Enrgtech's Unique Manufacturing Part Number ET13964345.
You can order Siemens brand products with 3RH2140-1BF40 directly through our website or call us at +44 (0) 3303 800 157 or email our support team at sales@enrgtech.co.uk.
Yes. Our products in Contactors category are shipped in lowest possible time.
You will get a confirmation email regarding your order of Siemens Sirius Innovation 3RH2 Contactor, 4NO (Auxiliary), 10 A, 110 V dc Coil. You can also check on our website or by contacting our customer support team for further order details on Siemens Sirius Innovation 3RH2 Contactor, 4NO (Auxiliary), 10 A, 110 V dc Coil.
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