Siemens Overload Relay: Thermal Protection, 3 Poles, 1NO/1NC, Frame Size S0
The SIEMENS Overload Relay: Thermal Protection (MPN 3RU21264NB0) is an IEC thermal overload relay with a Frame Size S0, designed for use with SIRIUS contactors of the same frame size. It features a 1NO/1NC auxiliary…
SKU 3G-OTH-40883
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- Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
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- Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.
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Product Description
The SIEMENS Overload Relay: Thermal Protection (MPN 3RU21264NB0) is an IEC thermal overload relay with a Frame Size S0, designed for use with SIRIUS contactors of the same frame size. It features a 1NO/1NC auxiliary contact form, screw terminals, and a maximum voltage rating of 690V AC. The relay includes integrated bimetallic elements, eliminating the need for separate thermal units, and does not offer phase loss sensitivity.
Frequently Asked Questions
What is the SIEMENS 3RU21264NB0 overload relay used for?
The SIEMENS 3RU21264NB0 is an IEC thermal overload relay used to protect motors from overcurrent and phase imbalance. It is designed for industrial applications with SIRIUS contactors of Frame Size S0, providing reliable thermal protection via integrated bimetallic elements.
What are the specifications of the SIEMENS 3RU21264NB0 overload relay?
The SIEMENS 3RU21264NB0 is a 3-pole thermal overload relay with Frame Size S0, 1NO/1NC auxiliary contacts, screw terminals, and a maximum voltage rating of 690V AC. It covers a current range of 23 A to 28 A and includes integrated bimetallic elements, so no separate thermal units are needed.
Where to buy the SIEMENS 3RU21264NB0 overload relay worldwide?
You can source the SIEMENS 3RU21264NB0 overload relay worldwide through 3G Electric. As a global industrial equipment distributor since 1990, 3G Electric handles full logistics, customs clearance, and delivery to your location, ensuring a smooth procurement process.
How to install the SIEMENS 3RU21264NB0 overload relay?
To install the SIEMENS 3RU21264NB0, mount it directly onto a SIRIUS contactor of Frame Size S0 using the screw terminals. Ensure the motor current is within the 23 A to 28 A range and that the auxiliary contacts (1NO/1NC) are wired correctly. Always follow the manufacturer's manual for safe installation.
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Common applications for SiemensSiemens Products
3G Electric supplies Siemens iec thermal overload relays. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.
