Quick Answer: The Four Way Plug Key has polished brass blocks on an insulated base with four ways, each closed by a tapered brass plug. The plugs have insulated handles.
Last updated: October 2026
Key Features
Four ways for switching separate branches or several at once
Polished brass blocks
Tapered brass plugs with insulated handles
Insulated base
Technical Specifications
Specification
Value
Ways
4
Blocks
Polished brass
Plugs
Tapered brass, insulated handles
Base
Insulated
About This Product
Each plug bridges a gap between two brass blocks, so inserting or removing it switches that branch on or off. The four-way key lets a class change between circuit paths in bridge experiments without rewiring.
Frequently Asked Questions
How many circuits can the Four Way Plug Key switch?
It has four ways, which can be used one at a time or together.
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