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ABB HPA24/612C is a 24kV indoor SF6 medium voltage circuit breaker with rated current 630A and rated short-circuit breaking current 12.5kA. It is compatible with SafeSix switchgear and has been discontinued. The recommended replacement models are VD4-24/630-16 and HD4-24/630-16.
- Model Code Explanation
| Code Segment | Meaning | Description |
| HPA | Product series code | ABB indoor SF6 medium voltage circuit breaker series, sharing the same platform with HD4 series, applicable for SafeSix switchgear |
| 24 | Rated voltage level | 24kV (IEC standard, matching domestic 24kV power system) |
| 612 | Combination of current and breaking capacity | 6 stands for 630A rated current; 12 stands for 12.5kA rated short-circuit breaking current |
| C | Structure & configuration code | Standard configuration, fixed type or withdrawable type (depends on switchgear type) |
- Core Technical Parameters (2026 Official Manual Version)
| Parameter | Value | Standard Basis | Remarks |
| Rated Voltage (Un) | 24kV | IEC 62271-100 | Max operating voltage: 27.5kV |
| Rated Current (Ir) | 630A | IEC 62271-100 | Continuous operation at ambient temperature 40℃ |
| Rated Short-circuit Breaking Current (Isc) | 12.5kA | IEC 62271-100 | 3-second short-circuit withstand |
| Rated Short-time Withstand Current (Icw) | 12.5kA/3s | IEC 62271-100 | Thermal stable current |
| Rated Peak Withstand Current (Ipk) | 31.5kA | IEC 62271-100 | Dynamic stable current |
| Operating Mechanism | Spring energy storage | IEC 62271-100 | Manual / electric operation optional |
| Insulating Medium | SF6 gas | IEC 62271-100 | Rated pressure: 0.45MPa @20℃ |
| Protection Degree | IP4X | IEC 60529 | Cabinet installation condition |
| Mechanical Endurance | 10,000 operations | ABB technical specification | Standard operation cycle |
| Electrical Endurance | 100 times | IEC 62271-100 | Rated short-circuit breaking times |
| Weight | Approx. 85kg | ABB technical specification | Excluding accessories |
| Order Number | 1VYN400551-XXX | Official ABB | Subject to actual configuration |
- Cross-brand Compatibility Comparison (MV SF6 Circuit Breaker)
| ABB Model | Schneider | Siemens | Eaton | Technical Differences |
| HPA24/612C | MVnex 24/630-12.5 | 3AH4 24kV/630A/12.5kA | Power Xpert 24kV/630A/12.5kA | ABB HPA series adopts SF6 insulation and spring mechanism, fits SafeSix switchgear |
| Replacement: VD4-24/630-16 | HVX 24/630-16 | 3AH5 24kV/630A/16kA | Power Xpert 24kV/630A/16kA | VD4 adopts vacuum insulation with 30,000 mechanical operations and superior environmental performance |
- Full HPA Series Model List
| Model | Rated Voltage | Rated Current | Breaking Capacity | Application Scenarios |
| HPA12/616C | 12kV | 630A | 16kA | Industrial power distribution, substation |
| HPA12/620C | 12kV | 630A | 20kA | Heavy industry, large factories |
| HPA12/1225C | 12kV | 1250A | 25kA | Regional substation, power plant |
| HPA12/1631C | 12kV | 1600A | 31.5kA | Large industrial users, hub substation |
| HPA24/612C | 24kV | 630A | 12.5kA | 24kV power distribution system, small substation |
| HPA24/616C | 24kV | 630A | 16kA | 24kV power distribution system, medium-sized factories |
| HPA24/1220C | 24kV | 1250A | 20kA | 24kV regional substation |
| HPA24/1625C | 24kV | 1600A | 25kA | 24kV large industrial projects |
| HPA36/616C | 36kV | 630A | 16kA | 36kV power distribution system |
- Common Faults & Maintenance Guidelines
| Fault Phenomenon | Possible Causes | Troubleshooting Steps | Maintenance Suggestions |
| Failure to close | 1. Incomplete energy storage | 1. Check energy storage indicator | 1. Test manual energy storage |
| 2. Abnormal control voltage | 2. Measure control circuit voltage (DC220V/AC220V) | 2. Repair control circuit fault | |
| 3. Interlock not released | 3. Inspect mechanical interlock status | 3. Adjust interlock device | |
| Failure to open | 1. Burnt trip coil | 1. Measure coil resistance (normal: approx.100Ω) | 1. Replace trip coil |
| 2. Tripping mechanism stuck | 2. Test manual opening operation | 2. Clean and lubricate tripping mechanism | |
| 3. Low SF6 gas pressure | 3. Check SF6 pressure gauge (≥0.4MPa) | 3. Refill gas or inspect air leakage | |
| SF6 gas leakage | 1. Aging sealing parts | 1. Detect leakage with SF6 leak detector | 1. Replace sealing components |
| 2. Loose connectors | 2. Check all connecting parts | 2. Fasten connectors | |
| 3. Shell crack | 3. Observe shell appearance | 3. Replace shell for severe damage | |
| Excessive contact resistance | 1. Contact wear | 1. Measure contact resistance (≤50μΩ) | 1. Replace contacts |
| 2. Dirty contact surface | 2. Inspect contact surface | 2. Clean contact surface | |
| 3. Loose connecting bolts | 3. Check bolt tightening torque | 3. Fasten bolts per standard torque |
- Application Environment & Industry Cases
6.1 Applicable Scenarios
24kV industrial power distribution system (chemical, metallurgy, mining industry)
Secondary substation of urban power grid
Commercial buildings and infrastructure (airport, hospital, data center)
Renovation projects matching SafeSix switchgear
6.2 Inapplicable Scenarios
Altitude above 2000m (derating required, derating factor: 0.9 per 1000m)
Severe corrosive environment (seaside, chemical zone, special anti-corrosion treatment required)
Frequent short-circuit breaking operation (exceed 10% of rated breaking times)
Areas with strict environmental requirements (SF6 has strong greenhouse effect, VD4 vacuum circuit breaker is preferred)
6.3 Typical Application Cases
Case 1: 24kV Power Distribution Renovation for Chemical Plant
Application: Replace old oil-minimum circuit breakers to improve power supply reliability
Solution: 8 sets HPA24/612C matched with ABB REF542 protection relay
Effect: Fault outage duration reduced by 80%, maintenance cost cut by 50%
Case 2: 24kV Traction Substation for Urban Rail Transit
Application: Protection for traction transformer and feeder line
Solution: 4 sets HPA24/612C with withdrawable structure for quick replacement
Effect: Meet high reliability requirements of rail transit, MTTR＜30 minutes
- Air Freight Compliance & Certification Information
7.1 Air Freight Compliance
Hazard Classification: Non-dangerous goods (no lithium battery, no explosive materials)
IATA Shipping Category: General cargo
Packaging Standard: Comply with ISTA 3A standard to avoid SF6 seal damage caused by transportation vibration
Note: Close SF6 inflation valve during transportation to prevent gas leakage
7.2 Certification Documents
CE Certificate No.: 1YHA000091 (universal for HPA series)
IEC Standard Approval: IEC 62271-100:2017
China National Standard Approval: GB 1984-2014 High-voltage Alternating Current Circuit-breakers
Environmental Certification: SF6 gas recovery complies with IEC 62271-4
- Model Selection & Replacement Suggestions
- Model Confirmation: HPA series is fully discontinued. It is recommended to contact ABB customer service 400-810-8888 and provide nameplate photos to confirm detailed configuration.
- Replacement Solutions
First choice: VD4-24/630-16 (vacuum type, 30,000 mechanical operations, SF6-free eco-friendly design)
Alternative choice: HD4-24/630-16 (SF6 type, same platform as HPA, direct replacement without switchgear modification)
- Spare Parts Procurement: Limited stock of HPA series spare parts. Pre-order via authorized ABB distributors in advance or plan overall equipment upgrading.
