Eaton P3BKD3125N circuit plug-in unit - IEEE-Certified
Part Number: P3BKD3125N
Quick Summary
Eaton Pow-R-Way III circuit breaker plug-in unit is designed to protect busway-fed distribution panels with reliable trip performance. For engineers grappling with downtime from nuisance trips and complex busway integration, this plug-in unit simplifies field service and maintenance. It carries IEEE Certified, CSA Certified, and UL 857 listings to support compliance and safe operation. With a 125 A rating, 100% Neutral, and 50% Integral grounding, it supports 240, 480, and 600 V systems without compromising panel density. This combination delivers faster commissioning, reduces wiring errors, and aligns with procurement and maintenance objectives while enabling scalable protection for modern industrial facilities.
Product Information
Extended Description
P3BKD3125N Eaton: Eaton Pow-R-Way III circuit breaker plug-in unit, Busway, Three-pole, KD, Plug, Breaker, K Frame (70-400 A), 125A, 65 kAIC at 240 Vac, 35 kAIC at 480 Vac, 25 kAIC at 600 Vac, 100% Neutral, 50% Integral/Housing Ground
Product Name
Eaton Pow-R-Way III circuit breaker plug-in unit
Catalog Number
P3BKD3125N
UPC
786683000536
Product Length/Depth
13.29 in
Product Height
34.41 in
Product Width
7.79 in
Product Weight
53 lb
Warranty
Eaton Selling Policy 25-000, one (1) year from the date of installation of the Product or eighteen (18) months from the date of shipment of the Product, whichever occurs first.
Compliances
NEMA Compliant
Certifications
IEEE Certified CSA Certified UL 857 ANSI
Circuit Breaker Frame
K
Design
Pow-R-Way III
Grounding Options
50% Integral/Housing
Number Of Poles
Three-pole
Type
Breaker
Amperage Rating
125A
Interrupt rating
65 kAIC at 240 Vac, 35 kAIC at 480 Vac, 25 kAIC at 600 Vac
Neutral Options
100%
Application
Busway
Product Category
Plug
Feature → Business Impact → Application: Three-pole Pow-R-Way III design provides robust protection for busway-fed panels, reducing nuisance trips and enabling consistent fault isolation in distributed power systems. This translates to lower downtime and smoother maintenance cycles in manufacturing environments where uptime is critical. Application: busway protected power distribution in factories and processing plants. Feature → Business Impact → Application: 125 A amperage with high interrupt ratings (65 kAIC at 240 VAC, 35 kAIC at 480 VAC, 25 kAIC at 600 VAC) delivers reliable fault clearing for heavy motor loads, reducing arc-flash exposure and equipment damage. Application: high-current busway feeders and motor starter banks. Feature → Business Impact → Application: 100% Neutral and 50% Integral Grounding options improve fault current paths and grounding integrity, enhancing safety and compliance. Application: critical loads and safety-conscious installations. Feature → Business Impact → Application: Compact plug-in unit design (13.29 in L x 34.41 in H x 7.79 in W, 53 lb) enables straightforward retrofits and quick panel integration, cutting install time and labor costs. Application: field upgrades and new builds with space constraints. Feature → Business Impact → Application: NEMA compliant with IEEE, CSA, UL 857, ANSI certifications simplifies regulatory approvals, reducing procurement risk. Application: regulated industrial facilities requiring formal certification. Feature → Business Impact → Application: Warranty and service terms (one-year from installation or 18 months from shipment) provide predictable support and total cost of ownership, aiding budget planning. Application: procurement planning and long-term maintenance contracts.
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FAQs
The P3BKD3125N is a three-pole, plug-in circuit breaker designed specifically for Pow-R-Way III busways. Its dimensions and mounting are compatible with standard busway housings, enabling straightforward retrofits and new installs. When selecting this unit, verify busway channel size, grounding provisions, and available neutral contacts to ensure a seamless fit and reliable electrical performance.
This model is rated at 125 A with interrupt ratings of 65 kAIC at 240 VAC, 35 kAIC at 480 VAC, and 25 kAIC at 600 VAC. It supports 100% neutral and 50% integral grounding, making it suitable for high-current busway circuits while maintaining safe fault clearing and grounding integrity across voltage classes.
Yes. It is a three-pole breaker designed for three-phase busway configurations. Grounding options include 50% integral housing grounding, and it provides 100% neutral capability, improving fault path reliability and meeting common industrial grounding practices for balanced loads and protective coordination.
The unit carries IEEE Certified, CSA Certified, UL 857, and ANSI certifications and is NEMA Compliant. These listings support regulatory acceptance in industrial plants and help reduce procurement risk when aligning with corporate and local electrical codes.
By simplifying installation, reducing wiring errors, and providing reliable protection for busway feeders, the P3BKD3125N minimizes downtime and maintenance labor. Its solid fault-clearing ratings and standard certifications help lower risk, while the one-year warranty (or 18 months from shipment) offers predictable post-sale support and budget stability.