Keys and Switches(6)

Quick answer: STEMAids manufactures and supplies 6 circuit-control components across three groups: plug keys from ₹85, special-function keys from ₹70, and a jockey accessory at ₹35 — all listed on stemaids.com on 28 August 2026. Eduscope Smart Learning Solutions Private Limited is Udyam-registered for laboratory equipment manufacturing (UDYAM-DL-06-0069460) and ISO 9001:2015 certified, supplying schools, colleges and vocational institutes across India and for export.

STEMAids supplies keys and switches for circuit-building as part of its Electronics Lab Equipment Manufacturer and Physics Lab Equipment Supplier range across Delhi and pan-India.

Keys and Switches is a small but essential category: every circuit-building practical needs a reliable way to open and close a circuit on command, and a plug key or tapping key that sticks or arcs mid-experiment interrupts a class more than almost any other apparatus failure. These components are simple, but the contact quality and mechanical action matter — a loose plug key gives inconsistent readings on a connected ammeter or voltmeter, which can mislead a student mid-practical.

What the Keys and Switches range covers

The Reversing Key Commutator is worth specifying correctly: it is not interchangeable with a standard plug key, since its four-terminal design is what allows current direction to be reversed without rewiring the circuit, which is the specific action most electromagnetic-induction practicals require. For general make/break switching, the Single Circuit Plug Key at ₹85 is the most economical option for a standard resistance or current practical.

Applying the 6-S Framework to Keys and Switches

Even at this end of the price list, the 6-S Framework keeps a reorder decision defensible. Syllabus: confirm whether the practical needs simple make/break switching or current-direction reversal before ordering — the two are not interchangeable. Specification: ask for terminal count and contact material rather than accepting a generic listing, since a four-contact key and a single-circuit key serve different circuits. Safety: plug keys used in higher-current circuits should be issued with basic handling guidance for younger students. Sturdiness: contact points should hold a clean connection across a full academic year of repeated insertion and removal. Spares: plug keys are among the most frequently lost or damaged small components in a lab inventory — budget for termly top-ups. Supporting documents: manufacturer specification sheets and the statutory document pack are available via the Tenders page for institutional and government procurement.

Frequently Asked Questions

What is included in the Keys and Switches category?

Six circuit-control components across three groups: plug keys, special-function keys, and a jockey accessory, all listed on stemaids.com on 28 August 2026.

What is the difference between a plug key and a tapping key?

A plug key (from ₹85) makes or breaks a circuit and holds that state once inserted. The Physics Lab Tapping Key (₹70) gives only momentary contact when pressed, which is the action required for protecting a galvanometer during Wheatstone-bridge balancing.

Do you supply a key for current-reversal experiments?

Yes. The Reversing Key Commutator is listed at ₹240 on stemaids.com and is specified for electromagnetic-induction practicals where current direction needs to be reversed without rewiring the circuit.

What is the Pencil Jockey Physics Model used for?

The Pencil Jockey Physics Model (₹35) is a sliding-contact accessory used in potentiometer and metre-bridge practicals to tap a variable point along a resistance wire.

Which plug key should I order for a standard Ohm’s-law experiment?

The Single Circuit Plug Key (₹85) or Electrical Switching Plug Key (₹140) both suit standard single-circuit Ohm’s-law and resistance practicals. The Four Contact Plug Key (₹280) is intended for circuits with multiple switching points.

Is STEMAids a registered manufacturer of these components?

Yes. Eduscope Smart Learning Solutions Private Limited is a Udyam-registered micro manufacturing enterprise (UDYAM-DL-06-0069460) and is ISO 9001:2015 certified. See the About page for the full registration and certification details — manufacturer-stated, verify before citing in procurement documents.

Related Categories

Keys and Switches sits within Physics Equipments alongside Electrical and Electronics for circuit-building components, Measuring Instruments for ammeters and voltmeters, Rheostat for variable-resistance control, and General Items for wire and consumable apparatus.

See also: Electrical and Electronics.