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Siemens SIRIUS 3RH1921-1HA31

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3RH1921-1HA31

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The Siemens 3RH1921-1HA31 auxiliary switch block is an integral component designed for enhanced control functionality. It features a versatile contact configuration with three normally open contacts and one normally closed contact, suitable for a range of applications.

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Ships from Raleigh, NC
2 Year DO Supply Warranty
Not an Authorized Distributor: DO Supply is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All of our products come with DO Supply's 2-year warranty.
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Technical specifications for 3RH1921-1HA31

ManufacturerSiemens
Product TypeAuxiliary Switch Block
Product LineSIRIUS
Part Number3RH1921-1HA31
Weight0.25 lbs (0.11 kg)
Contact Configuration3 Normally Open (NO) and 1 Normally Closed (NC)
Number of Poles4 Poles
Connection TypeScrew-type terminals
Mounting TypeSnap-on mounting
Surge Voltage Resistance6 kV
AC-12 Operating Current10.0 A
Operating Current at 230V AC-156.0 A
Operating Current at 400V AC-153.0 A
Operating Current at 24V DC-136.0 A
Operating Current at 110V DC-131.0 A
Operating Current at 220V DC-130.3 A
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The 3RH1921-1HA31 auxiliary switch block from Siemens' SIRIUS series enhances operational capabilities in electrical control systems. Designed as a four-pole device, this switch block provides three normally open contacts and one normally closed contact, adaptable for diverse circuit requirements. It employs screw-type terminals for secure connections, ensuring stability in electrical performance.

With a snap-on mounting option, the switch block is easy to install into various setups without requiring extensive tools. It boasts a surge voltage resistance rated at 6 kV, providing protection against voltage spikes in the network. The operational capabilities include:

  • An AC-12 current rating of 10.0 A, making it effective for conventional AC applications.
  • At 230 volts, the AC-15 circuit carries up to 6.0 A, while at 400 volts, it handles 3.0 A. For DC operations, the switch supports 6.0 A at 24 volts, 1.0 A at 110 volts, and 0.3 A at 220 volts under DC-13 specifications.

The 3RH1921-1HA31 is thus suitable for integration in various control applications, offering reliability and flexibility in its design.