New Qty 1 NOS Vintage Centralab-Style 7P8T 7 Deck 8 Position Rotary Switch with Home Position (0) – MIL Spec Ceramic USA Rotary Switch
High-quality multi-deck rotary switch consistent with Centralab (Central Radio Laboratories) military/industrial construction. Made in USA, likely 1960s era based on materials and build.
This is a high-end multi-deck ceramic rotary switch typical of 1960s military and RF equipment. Multi-wafer Centralab-type switches of this configuration were used where precise, repeatable signal routing across multiple circuits was required.
Electrical Configuration:
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7 Deck (7 Pole)
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8 Active Positions (1–8)
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Indexed Home Position (0) with dedicated contact
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1 Common terminal per wafer
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Non-Shorting (Break-Before-Make)
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Wafers electrically independent (no cross-deck continuity)
Switch Operation:
At rest (“0” position), common connects to the dedicated home terminal.
Rotating the shaft steps through 8 discrete positions, each connecting common to a unique terminal.
The indexed home position (0) provides a defined default state, a feature commonly used in test and communication equipment.
Construction Features:
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Ceramic wafers (high reliability / low leakage)
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Heavy-duty tie-rod stack assembly
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Fork-style solder lugs (Centralab-type)
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Positive detent indexing mechanism (ball/spring type)
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D-shaft (flat side) for secure knob coupling
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Panel mount design
Testing:
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Tested for continuity and switching function
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Multiple wafers verified with identical behavior
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All positions engage cleanly with no dead spots
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Smooth rotation with firm detents
Markings:
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R5930.578.9818.D334
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B0161-04304
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“Made in USA”
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FSC 5930 (Electrical Switches classification)
Switch will ship in new protective packaging to ensure safe arrival
In Stock - Fast 1-day handling /Fast Shipping from Tennessee
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