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Allen Bradley Guardmaster Safety Relays 440G-T21BNPT-1B

Product image is representative; revision or series may vary. Contact us to request a specific version.

440G-T21BNPT-1B

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The 440G-T21BNPT-1B model from Allen Bradley serves as a guard locking switch designed for safety applications. It operates at 24V AC or DC and features specific contact configurations beneficial for interlocks and safety systems.

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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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Rockwell Disclaimer: The product is used surplus. DO Supply is not an authorized surplus dealer or affiliate for the Manufacturer of this product. The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because DO Supply is not an authorized distributor of this product, the Original Manufacturer's warranty does not apply. While many Allen-Bradley PLC products will have firmware already installed, DO Supply makes no representation as to whether a PLC product will or will not have firmware and, if it does have firmware, whether the firmware is the revision level that you need for your application. DO Supply also makes no representations as to your ability or right to download or otherwise obtain firmware for the product from Rockwell, its distributors, or any other source. DO Supply also makes no representations as to your right to install any such firmware on the product. DO Supply will not obtain or supply firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing firmware.

Technical specifications for 440G-T21BNPT-1B

ManufacturerAllen Bradley
Product TypeGuard Locking Switch
Product LineGuardmaster Safety Relays
Part Number440G-T21BNPT-1B
Weight1.25 lbs (0.57 kg)
UPC662074395026
Actuator IncludedNo
Contact TypeBreak-before-make contact
Solenoid Contacts1 N.C. and 1 N.O.
Number of Safety Contacts2 (N.C.)
Number of Auxiliary Contacts1 (N.O.)
Rated Voltage (AC)24 V AC
Rated Voltage (DC)24 V DC
Body MaterialPlastic
IP RatingIP67
Minimum Operating Temperature0 °C
Maximum Operating Temperature40 °C
Minimum Storage Temperature0 °C
Maximum Storage Temperature40 °C
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The Guardmaster series includes the Allen Bradley 440G-T21BNPT-1B guard locking switch, a key component for enhancing safety in operational settings. This device operates effectively on 24 volts, compatible with both AC and DC power sources, ensuring versatile application in various circuits. The switch's unique feature is its break-before-make contact type, crucial for preventing overlapping contacts during switching operations.

This model is equipped with a configuration of two normally closed safety contacts, which are vital in ensuring safe operations, as well as one normally open auxiliary contact for additional functionality. However, the actuator is not included with this model. Constructed from durable plastic, the body of the 440G-T21BNPT-1B switch is designed to withstand various conditions.

With an IP67 rating, it provides exceptional resistance against dust and moisture, making it ideal for use in demanding environments. The switch can operate effectively within a temperature range of 0 °C to 40 °C, ensuring reliable performance across different conditions. Additionally, the storage temperature for the device is maintained between 0 °C and 40 °C, which helps in preserving the integrity of the unit during prolonged inactivity.