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Honeywell Micro Switch EX-AR471-3

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EX-AR471-3

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The Honeywell EX-AR471-3 is an explosion-proof limit switch designed for use in hazardous environments. Rated for a voltage of up to 480 VAC, it features a robust construction suitable for extreme conditions.

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Technical specifications for EX-AR471-3

ManufacturerHoneywell
Product TypeExplosion-proof limit switch
Product LineMicro Switch
Part NumberEX-AR471-3
Voltage Rating (AC)125/250/480 VAC
Voltage Rating (DC)125/250 VDC
Current Rating15 Amps (AC); 0.5 Amps at 125 VDC / 0.25 Amps at 250 VDC
Contact ConfigurationSPDT (1 CO)
Actuator TypeSide-rotary with a roller lever, non-sparking, adjustable through 360°
Conduit/Termination0.5 in-14 NPT conduit with wire leads
Sealing (NEMA Rating)NEMA 1, 7 (Class I, Div 1, Groups C and D), and 9 (Class II, Div 1, Groups E, F, and G)
Minimum Operating Temperature-40°C
Maximum Operating Temperature71°C
Mounting TypeMounts from 4 sides
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The EX-AR471-3 by Honeywell operates as an explosion-proof limit switch, capable of withstanding hazardous conditions. Weighing 1.61 lbs, this device exhibits versatility in the field. It operates effectively across multiple voltage settings, including 125, 250, and 480 VAC, along with 125 and 250 VDC, granting high adaptability in industrial applications.

The switch manages a current rating of 15 Amps for AC systems, while its DC ratings are 0.5 Amps at 125 VDC and 0.25 Amps at 250 VDC. This allows it to cater to various electrical requirements. The contact configuration features a standard SPDT setup, providing essential operational flexibility.

Its actuator, designed as a side-rotary type, is complemented by a roller lever, enhancing user experience through precise adjustments. The actuator can be rotated up to 360°, offering efficient placement during installation. The construction of the device is engineered for durability, ensuring spark-free operation within potential explosive environments.

Compliance with NEMA standards includes ratings of NEMA 1, 7 (Class I, Div 1, Groups C and D), and 9 (Class II, Div 1, Groups E, F, and G), assuring protection against environmental hazards. The switch endures extreme temperatures, performing effectively from a minimum of -40°C up to a maximum of 71°C.

For mounting, the switch accommodates installation from four sides, making it flexible for various setups. The connection is executed via a 0.5 in-14 NPT conduit with wire leads, streamlining the process in wiring systems. The Honeywell EX-AR471-3 limit switch is thus well-suited for secure and effective operations in complex industrial conditions.