# New Brunswick Opportunities Network #050126M150

NB Power 72.5 kV Dead-Tank Vacuum Circuit Breaker Procurement

**Posted:** November 10, 2026
**Respond By:** November 23, 2026
**Identifier:** 050126M150
**NAICS:** 335313

NB Power is seeking outdoor 72.5 kV dead-tank vacuum circuit breakers for its Fredericton transmission operations.
- **Buyer:** New Brunswick Power Corporation (NB Power / Énergie NB), Transmission.
- **Requested equipment:** Three-pole, gang-operated, dry-air-insulated vacuum circuit breaker(s), rated 2,000 A continuous current and 31.5 kA short-circuit breaking current, for 60 Hz service.
  - The latest notice states one breaker; the RFQ attachment lists two. Confirm the final quantity with NB Power.
  - NB Power material number: 00082844. Specification: STDT-51530-3001-001-TS-A.
- **OEM/source options named:** **Siemens Canada Limited** (3AV1 BLUE) and **Composite Power Group Inc.** (MAS 7232).
- **Included scope:** Standard support structure/frame, integral current transformers, controls, dry-air monitoring and filling supply, required accessories, testing, manuals, and drawings.
- **Notable requirements:** Outdoor operation from -40°C to +40°C without tank heaters or capacitors; specified insulation withstand ratings; minimum 60-month warranty from delivery or 66 months after energization, whichever comes first.
- **Delivery:** DDP to the specified Fredericton location.

### Description

NB Power is seeking bids for the supply and delivery of outdoor 72.5 kV dead-tank vacuum circuit breakers for transmission in Fredericton, New Brunswick. The quoted equipment includes a support structure and must meet the technical requirements in the attached specification. The RFQ identifies one circuit breaker, rated 2000A and 31.5kA, with required delivery listed as November 16, 2027. Amendment 1 adds specification STDT-51530-3001-001-TS-A-01 to the attachments.

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