3RH1440-1AU00 SIEMENS Latched Contactor Relay Pole Nso

Review SIEMENS Latched Contactor Relay Pole No Opened Nso

The Siemens 3RH1440-1AU00 Latched Contactor Relay Pole NSO is an essential electrical component designed for controlling heavy loads through a contactor. This pole mount relay is part of Siemens' 3RH series and is specifically engineered for reliable and safe operation in industrial automation applications.

This contactor relay pole features a latching mechanism, which allows it to remain in the last contact position until manually reset. This makes it an excellent choice for applications where it is necessary to maintain a specific contact position for extended periods. The NSO designation indicates that this relay is intended for use with Normally Open contacts.

The Siemens 3RH1440-1AU00 contactor relay pole is rated for a maximum alternating current (AC) voltage of 250 volts and a maximum operating current of 16 amperes. This makes it suitable for applications with moderate power requirements. The relay's contact rating is 105 A at 250 V AC, ensuring it can handle heavy load currents.

Measuring 49.2 mm (1.93 inches) in width, 70.5 mm (2.78 inches) in height, and 34.7 mm (1.37 inches) in depth, this compact relay is easy to install and can be mounted on a DIN rail or a terminal box. Its robust design, featuring a die-cast aluminum housing, ensures long-lasting performance even in harsh operating conditions.

The Siemens 3RH1440-1AU00 Latched Contactor Relay Pole NSO comes with a coil voltage of 24 volts DC and a coil current of 0.125 A. It also features built-in overload protection, which safeguards the contactor from damage caused by overcurrents.

This contactor relay pole is designed for easy integration with various control systems and can be operated manually or remotely using a control device. Additionally, its high-quality components and rugged construction ensure reliable operation, even in demanding industrial environments.

Siemens 3RH1440-1AU00 is a latched contactor relay pole with Normally Open (NO) contacts. Here are some pros and cons that might help you make an informed decision about purchasing this component:

1. Siemens is a reputable brand known for manufacturing high-quality electrical components.

2. The latched contactor design ensures that the contacts remain in their last closed position until manually reset, providing reliable operation.

3. The NO contacts provide the ability to open or close a circuit when the coil is energized.

4. The contact rating is 10A at 250V AC, which is suitable for many low to medium power applications.

5. The compact size and modular design make it easy to install and integrate into various electrical systems.

1. The cost of this contactor relay pole is relatively higher than some other brands or models with similar specifications.

2. The use of NO contacts limits the application to circuits where the contacts need to be opened or closed depending on the coil's status.

3. Manual resetting of the contacts may be required, which can be inconvenient for applications that require continuous operation.

In conclusion, the Siemens 3RH1440-1AU00 latched contactor relay pole is a reliable and high-quality component suitable for applications that require NO contacts and manual resetting of contacts. Its compact size, easy integration, and reputation of the Siemens brand make it an attractive option. However, its relatively higher cost compared to some other brands or models may be a consideration for some users.

If you are looking for a cost-effective solution, you may want to consider alternative brands or models with similar specifications. However, if reliability, ease of integration, and the reputation of the brand are your primary concerns, then the Siemens 3RH1440-1AU00 latched contactor relay pole is an excellent choice.

Details:

Shipping: shipping cost.: condition: this is a surplus unused part. Shipping is quoted as part of the sale. Is Siemens 3RH1440-1AU00 not the part you are wanting.

3rh1440-1au00 Siemens latched contactor relay 4 pole no. This item may have been in storage for some time; it dust or marks on the box. For example, programmable logic controllers plc's, distributed control systems DC's's, human machine interface him's, variable speed drives BSD's, power supplies, pressure transmitters and everything in between.

specifications genpurrelays:

• brand: Siemens
• mpn: 3rh1440-1au00
• type: General Purpose Relays

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• time: 60 days
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• policy: returns accepted

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• city: denver, colorado
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shipping genpurrelays:

• class: standard
• transit: 6-13 days
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offer genpurrelays:

• options: ship-to-home
• availability: in stock
• sold #: 18
• started: november 20, 2025
• best offers: true
• price: $139.00
• item condition: New – Open box
• in stock #: 1

general genpurrelays:

• category: Business & Industrial > Electrical Equipment Supplies > General Purpose Relays