What does Automation Trader do?

Automation Trader is a trusted supplier of industrial automation parts, specializing in new, hard-to-find, and discontinued components. We ensure fast delivery to minimize downtime and keep operations running smoothly.

Can I order a product that isn't listed online?

Absolutely. Automation Trader specializes in sourcing hard-to-find industrial parts. Contact us and our team will help you find the components you need.

Are all products available off the shelf?

Most of our products are available immediately or with very short lead times. For items requiring longer delivery, we always provide an estimated timeline.

Siemens 3RH1921-1HA31

SKU3RH1921-1HA31

ManufacturerSiemens

CategoryIndustrial automation components

12-month warranty

Available: 2 units

Select Condition

Quantity

Net price (1 pc.):

Before ordering, make sure the part fits your device.

Free consultation

Delivery

Trusted partners:

International shipping

Dedicated account manager

Real-time tracking

Description

The Siemens 3RH1921-1HA31 is an auxiliary switch block designed for integration with Siemens motor contactors, specifically within the SIRIUS series. This component features a configuration of 3 normally open (NO) contacts and 1 normally closed (NC) contact, facilitating versatile control and signaling functions in industrial automation systems. It is engineered for compatibility with motor contactors ranging from size S0 to S12, ensuring broad applicability across various industrial settings. The device operates effectively within a temperature range of -25°C to +60°C, accommodating diverse environmental conditions. Its compact dimensions—44 mm in width, 38 mm in height, and 51 mm in depth—enable seamless integration into existing control panels and systems. The 3RH1921-1HA31 is equipped with screw-type terminals, providing secure and reliable electrical connections. As of April 1, 2023, this product has been phased out and succeeded by the SIRIUS 3RH2 series, reflecting Siemens' commitment to advancing automation technologies.