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Description The Eaton 10250T20KB is a heavy-duty 30.5 mm selector switch designed for industrial control applications requiring durable mechanical operation. It provides a two-position non-illuminated knob actuator with 1NO-1NC contacts for reliable circuit switching in harsh environments. Technical Specifications Condition New/Never Used Surplus Brand Eaton Category Pilot Devices Part Number 10250T20KB Subcategory Selector Switch Actuator Knob Contact Configuration 1NO-1NC Type 30.5 mm, Heavy-Duty Number of Positions Two-Position Series 10250T Actuator Color Black Illumination Non-Illuminated Rating NEMA 3, 3R, 4, 4X, 12, 13 Throw Type 60° NEMA Rating NEMA 3, 3R, 4, 4X, 12, 13 Size 30.5 mm Operating Style Assembled Selector Switch Application Industrial Control & Operator Interface Information About 10250T20KB The 10250T20KB is a selector switch from Eaton’s 10250T heavy-duty line designed for industrial operator control stations and equipment interfaces. Built around a 30.5 mm mounting format, it uses a black knob actuator to provide clear tactile switching between two defined positions. Its 1NO-1NC contact arrangement offers flexible control logic suitable for start/stop, enable/disable, or mode-selection functions. With NEMA 3, 3R, 4, 4X, 12, and 13 environmental ratings and a 60° throw mechanism, the switch ensures reliable manual operation in environments exposed to moisture, dust, oils, or corrosive conditions. Key Features Heavy-Duty 30.5 mm Construction: Built for long-term durability in industrial control panels and operator stations using a robust mechanical housing. Two-Position Selector Function: Provides clear mechanical detents for defined switching states, supporting simple operational modes. 1NO-1NC Contact Arrangement: Offers flexible control logic for use in interlocks, machine functions, or multi-state equipment commands. Black Knob Actuator: Ensures comfortable grip and consistent operation across repetitive switching cycles. 60° Throw Operation