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Allen Bradley Bulletin 937 937ZH-DPDP-2

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937ZH-DPDP-2

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The 937ZH-DPDP-2 is an intrinsic safety Zener barrier from Allen Bradley’s Bulletin 937 series. This unit features two channels, designed for DC positive polarity signals, and operates at a nominal voltage of 24 volts DC. With a maximum safe voltage rating of 250 volts, this barrier ensures reliable operation in varied environments.

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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 937ZH-DPDP-2

ManufacturerAllen Bradley
Product TypeIntrinsic Safety Zener Barrier
Product LineBulletin 937
Part Number937ZH-DPDP-2
Weight0.31 lbs (0.14 kg)
GTIN00 887172345258
Channels2 Channels
Signal TypeDC Positive Polarity
Max Series Resistance250 Ohms
Nominal Voltage24 Volts DC
Max Safe Voltage250 Volts
MountingDIN Rail
Fuse Rating50 mA
Operating Temperature-25 to 70 degrees Celsius
CertificationCE, UL, CSA
Ingress RatingIP 65
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The Allen Bradley 937ZH-DPDP-2 functions as an intrinsic safety Zener barrier. This model is part of the Bulletin 937 range and is designed for two-channel operation, specifically handling DC positive polarity signals. The unit has a nominal voltage specification of 24 volts DC and can safely operate within a maximum voltage of 250 volts.

Ensuring reliability, this barrier features a maximum series resistance of 250 Ohms. It maintains effective performance in environments with temperatures ranging from -25 to 70 degrees Celsius. The design allows for straightforward installation onto DIN rail setups, providing flexibility and convenience.

Protection against electrical faults is ensured with a fuse rating of 50 mA. Additionally, the device meets various certifications, including CE, UL, and CSA, adding credibility to its safety in operation. With an ingress protection rating of IP 65, the 937ZH-DPDP-2 offers resistance to dust and water ingress, making it suitable for use in industrial applications.