Home > Products > ABB > ABB GBU72 (3BHE031197R0001) Grid Breaker Unit – Reliable Breaker Control for Generator-to-grid Applications
ABB GBU72 (3BHE031197R0001) Grid Breaker Unit – Reliable Breaker Control for Generator-to-grid Applications
≥1 Combos
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Product Details
| HS Code | 853710 | Stock Status | In Stock | |
| Product Color | Brand New OR Used | Warranty | 12-month Warranty | |
| Payment method | 50% advance payment, f | Delivery time | 1 week for in-stock No more than one mon | |
| Express delivery methods | FedEx, UPS, DHL | Trademark | ABB | |
| Origin | Sweden |
Product Description
Warranty: 365 days
Lead time: 1 week if in stock; no more than one month at the latest
Payment: 50% advance payment; full payment prior to delivery
Express options: FedEx, UPS, DHL
Breaker close/trip control: Provides dedicated outputs for grid breaker actuation with robust isolation for control circuits.
Status supervision: Monitors breaker position and readiness via hardwired inputs, helping your system verify safe conditions before closing.
Interlock logic support: Suits synchronizing schemes where permissives, protections, and timing checks are essential.
Industrial-grade isolation: Galvanically isolated I/O for safer operation in MV/LV control cabinets.
Hardwired reliability: No-nonsense dry contact interfaces; stable performance even in noisy environments.
Service-friendly design: Clear terminal layout to speed up replacement, wiring checks, and commissioning tests.
| Brand / Model | ABB GBU72 – 3BHE031197R0001 (Grid Breaker Unit) |
| HS Code | 8538.90 (Parts suitable for use with control panels/apparatus) |
| Power Requirements | 24 VDC auxiliary (typical for control supply in many ABB panels) |
| Signal I/O Types | Dry contact inputs for breaker status; relay outputs for close/trip commands (galvanically isolated) |
| Communication Interfaces | Hardwired I/O; no fieldbus required for operation |
| Installation Method | Panel/cabinet mounting in a low-voltage control compartment; front-access terminals for wiring checks |
| Operating Environment | Indoor control cabinet, ventilated and dust-protected; typical control-cabinet thermal range |
You’ll typically see the GBU72 used in generator synchronizing schemes where a reliable grid breaker interface is critical:
Hydro and thermal power plants (synchronizing to utility grid)
Industrial captive power and CHP plants
Marine and offshore generator switchboards
Renewables with synchronous generators or hybrid plants using synchronous condensers
Modernized excitation/synchronizing panels replacing older breaker interface modules
One thing I appreciate is how straightforward commissioning becomes when the breaker interface is predictable. A maintenance lead at a hydro station told me they swapped a GBU72 during a planned stop, did a quick close/trip proof test, and were ready to parallel the unit within the same shift.
Reliability under real conditions: Hardwired, isolated I/O resists electrical noise common in generator rooms.
Compatibility with ABB ecosystems: Designed to integrate neatly with ABB synchronizing and excitation setups in many cases.
Downtime reduction: Drop-in replacement simplifies maintenance and gets plants back online faster.
Cost control: Extends the lifecycle of existing cabinets; avoids complete panel redesign.
Technical support: Clear wiring concept and standard test steps make fault-finding more direct for site teams.
Cabinet environment: Mount in a clean, ventilated LV control cabinet. Keep away from heat sources and high-EMI busbars where possible.
Wiring practices: Use properly sized, ferruled control wires. Separate power coil wiring from signal inputs to reduce interference.
Polarity and interlocks: Verify trip/close polarity and all permissive interlocks before energization. Perform a dry-run proof test.
Grounding: Follow ABB grounding references for shielded cables and bond the cabinet PE to reduce transient effects.
Routine checks: Periodically test breaker status inputs, exercise close/trip relays during outages, and retorque terminal screws.
Spare strategy: Keeping one GBU72 in stock is often justified for critical units to cap outage duration.
Compliance: Typically designed to meet CE requirements for industrial control equipment; RoHS alignment for materials.
Manufacturing quality: Produced under ISO 9001 quality systems (supplier/manufacturer level).
Warranty: 12 months from delivery (365 days).
You might notice that plants running synchronous generators value predictable hardwired breaker logic. The GBU72 seems to hit that sweet spot: clear I/O, robust isolation, and a form factor that technicians understand. If you need a replacement unit or building a retrofit plan, this model is a sensible choice.
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