When a machine's control panel is down, the first question is whether the relay you can order actually matches the socket and the circuit. The Line Electric MKP2A control relay answers that with a specific set of specifications: a 120VAC coil, 5A DPDT contacts, and an 8-pin octal round base. That combination makes it a candidate for vintage equipment repair, industrial maintenance, or a bench test station.
Quick Verdict
This is a general-purpose control relay with a clear identity: 120VAC coil voltage, 5A continuous contact rating, and double-pole double-throw (DPDT) switching. It is listed as used and described as vintage, with a dust cover and a wiring diagram printed on the casing. For someone maintaining older machinery or assembling a test rig that already accepts octal-based relays, the MKP2A is a practical fit. It is not a new, current-production part, so it belongs in restoration and bench-testing roles rather than fresh equipment builds.
What Stands Out from the Listed Details
The 8-pin octal base is a classic relay format, and this unit uses it with a 120VAC coil. The DPDT contact arrangement means the relay can switch two independent circuits, each with both normally open and normally closed paths. The printed wiring diagram on the casing is a useful touch for installation and checking. The dust cover adds a layer of protection in shop environments. These features align with the listed application of industrial use and bench testing.
Who It Suits
- Technicians repairing vintage control panels or industrial machinery that originally used this relay type.
- Hobbyists who need a known 5A DPDT relay for a test circuit.
- Maintenance staff who want a spare relay with a common 120VAC coil and octal base for quick swaps.
Meaningful Trade-Offs
The relay is marked as used, so you are buying a vintage component rather than a brand-new part. That means you should confirm the relay's condition and suitability for your exact circuit before installing it. The 5A contact rating is adequate for many control loads, but it is not a high-current power relay. If your application drives more than 5A, or requires a formally certified new part, this unit is not the right match. The vintage design may also differ in footprint from current relays, even if the pinout matches.
Product Note
#### Line Electric MKP2A 120VAC Control Relay 5A DPDT 8-Pin Octal Base Industrial Lot

Priced at USD 30.00, this listing offers the Line Electric MKP2A as a used relay with a 120VAC coil, 5A contacts, and DPDT configuration. The description highlights the octal base, dust cover, and wiring diagram printed on the casing. The condition is listed as used, aligning with the vintage description and industrial application. This relay suits projects where an original-style replacement or a bench test supply is needed.
Bottom Line
The Line Electric MKP2A control relay provides a clear set of specifications for a specific task: switching 5A loads at 120VAC in a DPDT format with an 8-pin octal base. At USD 30.00, the price is modest for a relay of this type. If you are repairing vintage equipment or building a test bench with octal sockets, this relay is worth considering. If you need a new, high-current, or certified component, this used vintage unit is not the right choice.