Summary

• The EAO 51-152.0252F Series 51 industrial pushbutton switch assembly features a momentary-action switching mechanism with 2 normally open (NO) and 2 normally closed (NC) contacts. This panel-mounted assembly includes a blank, unmarked dark-colored pushbutton, transparent hinged protective cover, attached switch contacts, mounting components, and a prewired gray wiring harness with labeled conductors and crimped wire ferrules.
• IMPORTANT: Two wires in the attached harness have cut, bare, unterminated ends without ferrules or connectors. The remaining wire ends retain their attached ferrules. The two unfinished leads will require appropriate termination or connection during installation. Please review all photographs for their exact condition.
• This item is listed as USED due to the two unfinished wire ends and its removal from equipment, although it was sourced from an uncommissioned cabinet.
• This item was sourced from a new, uncommissioned equipment cabinet that was dismantled prior to being placed into service. Please review all photos for the exact item, condition, and components included.

Product Description

• The EAO 51-152.0252F is an industrial momentary-action pushbutton switch actuator from the EAO Series 51 product family, designed for integration into compatible electrical control panels, industrial machinery, and operator-interface systems.
• This switch features a momentary-action mechanism with two normally open and two normally closed contacts. The snap-action switching mechanism changes contact states when the pushbutton is actuated and returns to its normal state when the button is released.
• This particular assembly features a blank, unmarked dark-colored pushbutton face with no lettering or symbols. The button is fitted with a transparent hinged protective cover that can be lifted to provide access to the switch. The cover also provides a physical barrier to help reduce unintentional operation.
• The transparent cover is mounted alongside a small metal component that forms part of the installed cover assembly. The individual manufacturer part numbers and exact functions of these additional cover components have not been independently verified.
• The assembly includes black panel-mounting components, attached electrical contacts, and a prewired gray wiring harness. Most of the conductors terminate in crimped wire ferrules and have identification markers.
• Two wires in the attached harness have cut, bare ends and do not have ferrules or connectors. These two leads are included in their existing condition and have not been repaired or reterminated. Buyers should inspect the wiring photographs and verify their installation requirements before purchasing.
• EAO specifies the 51-152.0252F actuator with gold contacts and solder terminals. The manufacturer's electrical specifications include a switching rating of 3 A at 250 VAC with solder terminals. Additional AC and DC ratings depend on the electrical load and operating conditions.
• The manufacturer specifies IP65 front-panel protection when the actuator is correctly installed, an operating temperature range of -25°C to +55°C, and a mechanical life of up to 2,000,000 operations under specified conditions.
• The Series 51 actuator is designed for configurable industrial control applications. Although the actuator supports illuminated configurations, an installed lamp, its voltage, and working illumination have not been verified on this particular assembly.
• This item was removed from a new, uncommissioned equipment cabinet before being placed into service. Because two wiring leads have been cut and left unterminated, the assembly is being sold as USED rather than New Old Stock.
• Functional operation, electrical continuity, and the complete wiring configuration have not been independently tested or verified.
• Buyers should verify the momentary switching action, 2 NO + 2 NC contact configuration, panel-mounting requirements, wire assignments, and electrical specifications before installation.

Product Information

• Manufacturer: EAO
• Model Number: 51-152.0252F
• Series: 51
• MPN: 51-152.0252F
• Product Type: Industrial Pushbutton Switch Assembly
• Condition: Used
• Switch Type: Momentary-Action Pushbutton
• Switching Mechanism: Snap-Action
• Contact Configuration: 2 Normally Open (NO) + 2 Normally Closed (NC)
• Contact Material: Gold
• Button Legend: Blank / Unmarked
• Button Color: Dark Blue / Black
• Protective Cover: Transparent Hinged Cover
• Protective Cover Operation: Lift-to-Access
• Protective Cover MPN: Not Verified
• Mounting Type: Panel Mount
• Termination Type: Solder Terminals with Attached Wiring Harness
• Wiring Harness: Included
• Wire Color: Gray
• Wire Terminations: Crimped Ferrules and Two Cut Bare Leads
• Unterminated Wires: 2
• Wire Identification: Labeled Conductors
• Rated Operational Voltage: 250 VAC/DC (Manufacturer Specification; Load Dependent)
• Switching Rating: 3 A at 250 VAC with Solder Terminals
• Resistive Switching Rating: 5 A at 250 VAC (Manufacturer Specification)
• Inductive Switching Rating: 2 A at 250 VAC, cos(phi) 0.7
• Contact Thermal Current: 3 A
• Front Protection Rating: IP65 (When Installed as Specified)
• Operating Temperature: -25°C to +55°C
• Mechanical Life: Up to 2,000,000 Operations
• Electrical Life: Up to 50,000 Operations
• Operating Travel: 3 mm
• Illumination: Actuator Supports Illumination; Installed Lamp Not Verified
• Country of Origin: Switzerland
• Original Equipment Compatibility: Not Verified
• Functional Testing: Not Verified

Included

• 1 x EAO 51-152.0252F Series 51 Momentary Pushbutton Switch Assembly
• 1 x Attached Blank / Unmarked Pushbutton Lens
• 1 x Attached Transparent Hinged Protective Cover
• 1 x Attached Contact and Terminal Assembly
• 1 x Attached Panel Mounting Hardware Assembly
• 1 x Attached Gray Wiring Harness with Ferrule-Terminated Conductors and Two Cut Bare Wire Ends

Not Included

• Replacement ferrules or connectors for the two cut wire ends, original equipment cabinet, control panel enclosure, external power supply, additional wiring, installation instructions, original packaging, or accessories not shown.

Listing is for one EAO 51-152.0252F blank momentary pushbutton switch assembly with the attached transparent protective cover and wiring harness only. Two wires have cut, bare, unterminated ends. Please review all photos for the exact item, condition, wiring configuration, and components included.