Product Overview
Potter & Brumfield KRPA-14DG-24 3PDT Plug-In Relay, 24VDC Coil, Clear Cover
Condition
Unused new old stock, clean and in excellent condition. The clear plastic dust cover is intact and the molded markings are crisp and fully legible: Potter & Brumfield, KRPA-14DG-24, the three-pole contact schematic, 1/3HP 120VAC, 10A 240VAC, 1/2HP 240VAC, 24VDC, MADE IN MEXICO, along with the CSA and UL recognition marks. Through the cover the contacts and armature look bright, with no arcing marks, pitting or corrosion visible. The eleven round octal pins are straight and bright, and the black base is molded with position numbers 1 through 11 around the center locating key. The photographed unit carries a handwritten orange inventory number on one side of the cover, the kind of grease-marker number surplus stock picks up in a warehouse bin. Photographed loose as it sits, with no box or socket shown.
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Product Overview
The KRPA-14DG-24 is a general purpose plug-in relay from the Potter & Brumfield KRPA series, the square clear-cover style most panel people just call an ice cube relay. It carries a 3PDT contact set, three form C contacts that each transfer a normally closed and a normally open circuit on one command, driven by a 24VDC coil. The eleven-pin octal base drops into a standard eleven-pin socket, so replacement in an existing panel is a pull and a push rather than a rewire. The cover carries the ratings molded right into the plastic: 10A at 240VAC, 1/3 HP at 120VAC and 1/2 HP at 240VAC, with CSA and UL recognition marks and MADE IN MEXICO. The clear cover is not decoration, it lets you watch the armature pull in while you are troubleshooting a live panel. Also searched as KRPA14DG24 and KRPA-14DG24.
Key Features
- Contact arrangement: 3PDT, three form C contacts, per the schematic molded on the cover
- Coil: 24VDC, marked on the cover
- Contact rating: 10A at 240VAC
- Motor load ratings: 1/3 HP at 120VAC and 1/2 HP at 240VAC
- Base: 11-pin octal base with round tapered pins, positions numbered 1 through 11 around a center locating key
- Cover: clear plastic dust cover with molded part number and ratings
- Agency marks: CSA and UL recognition marks molded into the cover
- Origin: Made in Mexico
- Construction: steel base plate carrying the pin ring
- Condition: unused new old stock
Applications
- Maintenance electrician swapping a dead 24VDC control relay in a legacy machine panel that already has an eleven-pin octal socket wired in
- Panel builder who needs one 24VDC command to transfer three separate circuits at once, such as a run signal plus two interlocks
- Machine rebuilder switching a small motor load inside the molded ratings, up to 1/3 HP at 120VAC or 1/2 HP at 240VAC
- Bench technician troubleshooting an intermittent control circuit who wants a clear-cover relay to actually see the armature pull in
Frequently Asked Questions
How many contacts does this relay switch, and what are they rated for?
Three, wired as 3PDT. Each of the three form C sets transfers a normally closed and a normally open circuit when the coil pulls in. The cover carries 10A at 240VAC for the contacts, plus motor ratings of 1/3 HP at 120VAC and 1/2 HP at 240VAC. Ratings beyond what is molded on the cover are not confirmed here, so check the Potter & Brumfield datasheet before you design around anything else.
Does it include a socket or a hold-down clip?
No. What you see in the photos is what ships: the relay itself, nothing else. It needs a standard eleven-pin octal socket, which you supply. If you are replacing a relay in an existing panel, the socket is already there.
Is the coil AC or DC, and what current does it draw?
DC. The cover is marked 24VDC, so drive it from a DC control supply, not a 24VAC transformer. Coil resistance, pull-in and drop-out voltages and coil current are not confirmed here, so verify those against the datasheet before sizing your supply.
How do I know which pin is which?
The base is molded with numbers 1 through 11 around the center locating key, and photo four shows that pattern clearly. Match those numbers against the wiring diagram for your panel or against the KRPA series pinout before you plug it in.
Why buy just the two or three relays I need here instead of a forced lot somewhere else?
Because a panel usually needs a specific count, not a box of ten. There are four of these on the shelf, so you can take one to get a downed machine running tonight, two for a rebuild, or all four to cover the machine and the spares drawer, and pay for exactly that many. Shipping is $8 flat rate and goes free once the order passes $28, so a couple of relays plus whatever else you are picking up usually rides for nothing, and orders leave our Idaho warehouse the same or next business day.
Potter & Brumfield put a clear cover on this thing for a reason: at 2 a.m., with a line down, you want to see the armature pull in, not guess at it. Three sets of contacts, one 24 volt command, and the next machine that goes quiet is yours to wake up.
