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1771-WHFB

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The Allen-Bradley 1771-WHFB field wiring arm is a fused type of field wiring arm that is available from the PLC 5 series and the Bulletin 1771 product line. It can provide output circuit protection to individual output circuits in an Allen-Bradley PLC 5 and Bulletin 1771 output module. The 1771-WHFB fused field wiring arm comes with a 1.5 Amps fuse for each output. The maximum continuous current that each fuse can handle is 1.1 Amps. The 1771-WHFB fused field wiring arm needs more clearance around it for installation than standard field wiring arms do.

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Technical specifications for 1771-WHFB

Manufacturer	Rockwell Automation
Brand	Allen-Bradley
Part Number/Catalog No.	1771-WHFB
Module Type	Wiring Arm
Max Number of I/O	16 I/O
Number of Terminals	21 Terminals
Max Fuse Size	1.5 Amperes
Contact Plating	Tin
Screw Torque	7-9 lb*in
Typical Application	General Purpose, Individual Circuit Protection, Fused Wiring Arm
Weight	0.3 lbs (0.1 kg)
Coating	Conformal Coat
Required External Power	None
Typical AC Signal Delay (Off)	29 (+/- 8) ms
Typical DC Signal Delay (Off)	30 (+/- 7) ms
Wiring Arm	1771-WN
Dimensions	4.5 x 12.4 x 6.3 in (115 x 317 x 160 mm)

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.

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The Allen-Bradley 1771-WHFB wiring arm is a 21-pin PLC-5 fused wiring arm. This PLC-5 series part provides a reliable and flexible interconnection between the sensor and actuator wiring and Allen-Bradley 1771 I/O modules. Its main purpose is to provide fuse protection for each of the 16 outputs. The maximum fuse size for the 1771-WHFB wiring arm is 1.5 Amps, 250 Volts AC rated. Users can order optional fuse kits for Allen-Bradley output modules, and for this particular wiring arm, the 1771-FD2 spare part kit with eight 2AG 1.5 Amps rated fuses (and 2 fuse holders) is recommended. The integral common I/O chassis clamp provides for easy installation and module access. This part has an integral module locking tab to ensure a safe and firm connection. The 1771-WHFB PLC-5 series wiring arm has conformally coated internal parts for durability. This module does not require a power supply. Its shipping dimensions are 4.5 inches by 12.4 inches by 6.3 inches and its total weight is 0.1 kilogram (0.3 pounds).

The Allen-Bradley 1771-WHFB wiring arm has 21 pins designated with the letters A, B, C, D, and E and 16 numbers (1 to 16). The wiring arm provides high flexibility in situations when a fuse needs to be replaced because it does not have to be removed from the I/O chassis to complete this operation. The Allen-Bradley 1771-WHFB wiring arm is compatible with the Allen-Bradley 1771-WH wiring arm, for which it can be used as an alternative or replacement part. The module supports the connections of wires of up to 14 AWG in size, and they can be directly clamped or spade-lugged to the 1771-WHFB wiring arm. The output circuits are individually protected, so if a single circuit is compromised, this will not affect any other output signal.