Product Overview
Westinghouse PD6R16A120 Digitrip RMS Rating Plug - 1200 A In on a 1600 A R Frame, Unused in the Original Box
Condition
Unused new old stock in its original Westinghouse box. The plug body is clean white molded housing with a black rod and six bright gold pins standing off the exposed green board, and a yellow inspection label reading T930715 sits on the solder side. The face label is crisp and fully legible: Digitrip RMS Rating Plug, For Use in R Circuit Breaker Only, Cat. PD6R16A120. The box shows light shelf wear and a crease across one corner, with 930831 written by hand on the top face. Its end label reads DATE RECEIVED 09/28/93, WESTINGHOUSE #PD6R16A120, QTY UNIT 1 EACH, and carries a spare parts accepted stamp dated 03/21/95 against P.O. 32211020, so this piece sat in a spare parts crib rather than in a breaker.
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Product Overview
The PD6R16A120 is the rating plug that tells a Westinghouse Digitrip RMS trip unit what current it is protecting. Its face label states the whole job in one block: Must Use With Frame Rated 1600, In (Rated I) = 1200, 40 C - 60 Hz Only, and the right-hand column lists S1-7, S2-8, M1-8, M2-10. Drop it into the front of the breaker and the 1600 A frame runs at a 1200 A rated current, with long-time pickup and delay set by the plug rather than by swapping breaker hardware. The housing carries a UL Listed Circuit Breaker Trip Unit label, Form 1, Issue G-565, marked OLDS, and the original Westinghouse box lists style number S# 1495D58G03, QTY. 1. The face also carries a battery check hole and green indicator with the instruction Hinge Down to Replace Battery, so the plug is field serviceable on that count. Per the current listing this plug fits Westinghouse R frame and Series G Digitrip RMS units; confirm your breaker frame rating against its nameplate before ordering.
Key Features
- Catalog number: PD6R16A120
- Type: Digitrip RMS rating plug, marked For Use in R Circuit Breaker Only
- Rated current In: 1200 A
- Required breaker frame: 1600 A
- Frequency: 60 Hz only, per the face label
- Ambient reference on label: 40 C
- Westinghouse style number: 1495D58G03
- Label setting column: S1-7, S2-8, M1-8, M2-10
- UL Listed Circuit Breaker Trip Unit, Form 1, Issue G-565
- Six gold-plated pins on an exposed board, with a black rod rising from the same face
- Battery check indicator with hinge-down battery replacement per the label
- Front-mounted installation, no tools required
- Sets long-time pickup level and delay multiplier
Applications
- Plant electrician down-rating a 1600 A R frame Digitrip breaker to a 1200 A In after a load study changes the feeder
- Switchgear service technician replacing a rating plug that went missing or got damaged during a maintenance outage
- MRO storeroom buyer putting a spare back on the shelf for a legacy Westinghouse Series G lineup still carrying load
- Breaker shop that needs a known 1200 A plug on the bench when primary injection testing an R frame unit
Frequently Asked Questions
What does this plug actually change on the breaker?
It sets the rated current the Digitrip RMS trip unit works from. The label reads In (Rated I) = 1200 with a required frame rating of 1600, which is how a 1600 A frame is configured to protect at 1200 A without replacing the breaker itself. It sets the long-time pickup level and delay multiplier.
Will it fit my breaker?
The label says For Use in R Circuit Breaker Only and Must Use With Frame Rated 1600. Per the listing history this plug is for Westinghouse R frame and Series G Digitrip RMS breakers. Check the frame rating and trip unit type on your breaker nameplate before ordering, because a rating plug is matched to the frame, not just to the amperage you want.
What about the battery the label mentions?
The face carries a battery check hole, a green indicator, and the instruction Hinge Down to Replace Battery. We have not powered, tested, or opened this plug, so the state of the battery is not confirmed. Plan on checking it and replacing it per Westinghouse instructions before you rely on the unit.
What exactly ships?
The rating plug shown in the photos and the original Westinghouse box shown with it, including the receiving and spare parts labels on the box. The images are of the actual item on our shelf, not a catalog stand-in. Nothing beyond what is photographed is promised.
Why buy this one photographed plug instead of chasing a surplus breaker lot?
A rating plug is a one-per-breaker part. You need the plug that matches your frame, not a crate of assorted ones, and this listing is a single identified piece: the catalog number, the style number, the UL label, and the box paperwork are all readable in the photos before you spend anything. The box still carries its 09/28/93 receiving date and its 03/21/95 spare parts acceptance stamp, which is why it is still unused. An auction pallet asks you to bid on a photo of a stack and sort it out after it lands. This item clears our free shipping line on its own, and orders leave the Idaho warehouse the same or next business day.
Received into a spare parts crib in the fall of 1993 and stamped accepted in 1995, this plug spent three decades waiting on a breaker that never called for it. Set that 1600 A frame where it belongs and let the wait finally pay off.
