Powell Industries PowlVac metal-clad switchgear (5-38 kV) and PowlVac-AR
Powell PowlVac metal-clad switchgear, the last US-listed independent building ANSI breakers with priced used supply
Powell Industries PowlVac metal-clad switchgear (5-38 kV) and PowlVac-AR is one of 41 data center switchgear tracked in the SecondWatt catalogue, each with specifications, lead times and indicative secondary-market pricing.
Powell PowlVac dossier: ANSI metal-clad 5-38 kV with used breakers from 3,960 USD and lineups at 40,000 USD, Powell demand data, inspection checklist.
PowlVac is Powell Industries' ANSI metal-clad MV switchgear with draw-out vacuum breakers, spanning roughly 5 to 38 kV with arc-resistant PowlVac-AR variants. Powell's CEO describes the company as the last publicly traded firm that manufactures breakers and switchgear domestically, and its numbers show what data center demand is doing to that position: Q3 FY2026 orders of 934 million USD (up 158%), a 2.4 billion USD backlog, a book-to-bill of 3.0, and a post-quarter 400 million USD-plus behind-the-meter data center mega order. Unlike the European lineups in this batch, PowlVac actually trades used with visible prices: a used PowlVac breaker at 3,960 USD and a 2-section 15 kV lineup at 40,000 USD OBO, against 60-80 week new metal-clad lead times and 35,000-75,000 USD per new section. That combination, ANSI-standard construction, US service, and a real secondary market, is exactly the profile SecondWatt's buyers want. Powell's order book is also the category's clearest demand signal: when the domestic switchgear builder books three times what it ships, used supply gets bid up behind it.
Why it matters
With Powell's backlog at 2.4 billion USD and book-to-bill at 3.0, the arbitrage between 40,000 USD used lineups and 35,000-75,000 USD per new section widens rather than closes.
Who buys it
Data center developers, utilities, and industrial plants buy PowlVac new and used; the used channel serves buyers who cannot wait 60-80 weeks. Powell's behind-the-meter data center orders show the same buyers increasingly specify it for on-site generation switching.
Role in the data center
Campus MV distribution and behind-the-meter generation switching; Powell's data center mega orders indicate growing use at on-site power plants feeding hyperscale load.
Key specifications
| Voltage range | ~5-38 kV |
|---|---|
| Construction | ANSI metal-clad, draw-out vacuum breakers |
| Arc-resistant variant | PowlVac-AR |
| Observed used breaker | 3,960 USD |
| Observed used lineup | 40,000 USD OBO (2 sections, 15 kV) |
| New-section benchmark | 35,000-75,000 USD per section |
| Q3 FY2026 orders | 934M USD (+158%) |
| Backlog / book-to-bill | 2.4B USD / 3.0 |
| Class lead time | 60-80 weeks (metal-clad) |
Technical summary
Type: ANSI metal-clad switchgear with draw-out vacuum breakers Voltage range: approximately 5-38 kV Arc-resistant variant: PowlVac-AR Manufacture: US domestic (Houston-based) Observed used breaker: 3,960 USD Observed used lineup: 40,000 USD OBO (2 sections, 15 kV) New-section benchmark: 35,000-75,000 USD per section Class lead time: 60-80 weeks (metal-clad) Demand signal: Q3 FY2026 backlog 2.4B USD, book-to-bill 3.0
Pricing and availability
Comparable secondary-market band: 3960–40000 $ per breaker / $ per section. Trend: up Lead time, new: 60-80 weeks (metal-clad class). Lead time, used or refurbished: 1-8 weeks. Warranty, used: 1-year typical from reconditioning dealers.
Lifecycle and maintenance
Metal-clad MV switchgear routinely serves 40+ years: vacuum interrupters rated for 10,000-30,000 operations far outlast the mechanical duty standby service imposes, so lineup life is governed by insulation condition and relay/controls vintage. Breakers recondition readily and trade as units, while lineups modernize in place with digital relays and retrofit breakers. ANSI/NETA MTS acceptance testing at purchase plus PD surveys in service are the condition gates.
Common failure points
- Vacuum interrupters — Loss of vacuum ends interrupting capability with no external sign
- Insulation tracking and PD — Partial discharge across dusty or damp insulation progressing to flashover
- Racking and interlocks — Damaged racking screws and defeated interlocks from forced operation
- Protection relays — Obsolete or drifted relays mis-operate under fault
- Instrument transformers — CT/VT failures disable metering and protection inputs
- Space heater failure — Condensation-driven tracking in unheated outdoor or humid gear
Inspection checklist
Vacuum integrity — hipot test each interrupter per OEM procedure (e.g., 36 kV test on 15 kV class) Insulation resistance — megger bus and breakers at 2,500-5,000 V; compare to ANSI/NETA MTS tables Contact resistance — micro-ohm each pole; investigate imbalance beyond 50% between phases Partial discharge — ultrasonic and TEV survey; investigate any reading 6 dB above baseline Contact erosion — measure vacuum interrupter erosion marks against the OEM wear allowance Racking mechanism — cycle connect/test/disconnect positions 3 times each; verify interlocks and shutters Mechanism timing — verify open/close times; closing beyond 5 cycles flags mechanism trouble Bus insulation — inspect epoxy and boots for tracking or corona; clean and torque joints Instrument transformers — verify CT/VT ratios, insulation, and fusing Protection relays — test to calibration cycle; electromechanical relays need 1-2 year intervals Arc rating — confirm arc-resistant construction class (IEEE C37.20.7 Type 2B) matches the installation Heaters — verify space heaters work; condensation drives tracking failures in unheated gear Nameplate — confirm voltage class, BIL (60-150 kV by class), and interrupting rating against the application Standards — verify IEEE C37.20.2 construction and UL/CSA labels; run ANSI/NETA MTS acceptance tests Records — factory test report, maintenance history, and operation counts; missing history reprices as-is
Procurement channels
Powell direct and rep channels for new; eBay and dealer channels carry used PowlVac breakers and occasional lineups with visible prices, a rarity in MV switchgear.