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ABB 1SFL647088R7011 AF1250H-30-11 (3-Pole Contactor)
- Model Breakdown and Meaning
| Part of Model | Code | Detailed Description |
| Product Code | 1SFL647088R7011 | Official ABB part number for unique identification |
| Series | AF1250H | AF series 1250A contactor; H = high-performance version with higher short-circuit withstand capability |
| Main Poles | 30 | 3 poles, all main contacts NO (3NO), for 3-phase circuit control |
| Auxiliary Contacts | 11 | 1 NO + 1 NC auxiliary contacts for control circuits and status monitoring |
| Coil | 70 | Wide-range coil, suitable for 100–250V AC/DC, 50/60Hz universal |
Full Standard Model: ABB AF1250H-30-11-70 (1SFL647088R7011 is the official material code)
- Key Parameters and Specifications
Electrical Specifications
| Item | Specification |
| Rated Operational Current (AC-1) | 1260A at 400V, 1210A (UL universal) |
| Rated Operational Voltage | Up to 1000V AC (IEC) / 600V AC (UL) |
| Motor Power (AC-3) | 450kW at 400V, 225kW at 230V |
| Coil Voltage | 100–250V AC/DC, wide-range design, AC/DC universal |
| Main Contact Configuration | 3-pole NO (3NO) |
| Auxiliary Contact Configuration | 1 NO + 1 NC (1NO+1NC) |
| Mechanical Life | Up to 10,000,000 operations |
| Electrical Life (AC-1) | 1,000,000 operations |
| Short-Circuit Withstand | Complies with IEC 60947-4-1, suitable for industrial power grids |
Physical Characteristics
| Item | Specification |
| Dimensions | Approx. 270(W)*350(H)*220(D)mm (standard) |
| Weight | Approx. 28kg |
| Operating Temperature | -25~+70C (standard environment) |
| Protection Degree | IP20 (when installed in a control cabinet) |
| Mounting | Bolt-mounted, fits standard electrical cabinets |
| Wiring | Main circuit: copper bar connection; Auxiliary circuit: terminal connection |
- Applications and Selection Advantages
Recommended Applications
- Industrial Motor Control: Direct-on-line (DOL) starting, star-delta starting, soft starter bypass for large 3-phase induction motors
- Power Distribution Systems: Low-voltage switchgear, busbar sectionalizing, capacitor bank switching
- UPS & Inverter Systems: UPS transfer, inverter output control, bypass circuit switching
- Industrial Automation Lines: Heavy machinery, metallurgical equipment, mining machinery control
- Renewable Energy Systems: PV inverter output control, wind turbine converter control
Advantages
Wide-range coil: 100–250V AC/DC universal, reduces inventory, compatible with global grids
High-performance design: H version provides higher short-circuit withstand, improves system reliability
Modular design: Integrated main and auxiliary contacts, easy installation, low maintenance cost
Long service life: Mechanical life up to 10 million operations, electrical life 1 million operations
Energy saving & environmental protection: Electronic control coil, low power consumption, low heat generation
- Alternative Models in the Same Series
| Alternative Model | Key Difference | Application |
| AF1250-30-11-70 (1SFL647001R7011) | Standard performance version, no H marking | General industrial applications with lower short-circuit requirements |
| AF1250H-30-11-11 | Coil voltage 24–60V AC/DC | Safety voltage control circuits, hazardous environments |
| AF1250H-30-02-70 | 2 NO auxiliary contacts | Control circuits requiring more NO auxiliary contacts |
| AF1250H-30-20-70 | 2 NC auxiliary contacts | Control circuits requiring more NC auxiliary contacts |
| AF1250H-40-11-70 | 4-pole NO (4NO) | 3-phase 4-wire systems requiring neutral pole switching |
- Cross-Brand Alternatives
- Siemens
| Alternative Model | Key Parameters | Key Difference | Application |
| 3RT2076-6AP36 | 1250A, 3-pole, 1NO+1NC, 100–250V AC/DC | Siemens 3RT series, highly compatible with ABB, matches S7 PLC systems | Industrial automation, Siemens system integration |
| 3RT2076-6AP37 | 1250A, 3-pole, 1NO+1NC, 24V DC | For safety voltage control, hazardous areas |
- Schneider Electric
| Alternative Model | Key Parameters | Key Difference | Application |
| LC1D12500F7 | 1250A, 3-pole, 1NO+1NC, 100–250V AC | Schneider TeSys D series, compatible with Modicon PLC | Power distribution, building automation |
| LC1D12500M7 | 1250A, 3-pole, 1NO+1NC, 220V AC | Standard voltage coil, fixed grid applications |
- Mitsubishi
Alternative Model Key Parameters Key Difference Application SD-N125 1250A, 3-pole, 1NO+1NC, 100–250V AC/DC Mitsubishi SD series, cost-effective, matches Mitsubishi PLC
- Mainstream Chinese Brands
| Alternative Model | Key Parameters | Key Difference | Application |
| CHINT NC1-1250H/33 | 1250A, 3-pole, 1NO+1NC, 100–250V AC/DC | Cost-effective domestic, compatible with Chinese PLC | Cost-sensitive projects, localization |
| Delixi CJX2-1250H/33 | 1250A, 3-pole, 1NO+1NC, 100–250V AC/DC | Reliable domestic brand, good service | General industrial automation, SMEs |
- Replacement Selection Guide
- Direct Replacement (No System Change)
Top choices: Siemens 3RT2076-6AP36, Schneider LC1D12500F7
Reason: Parameters match AF1250H-30-11, same auxiliary contacts, coil voltage compatible, no control circuit modification needed.
- Performance Upgrade (Improve Reliability)
Recommended: Siemens 3RT2076-6AP36 (with surge suppression), original ABB AF1250H-30-11-70
Improvement: Added surge protection, longer contactor life, reduced EMI.
- Cost Optimization (Domestic High-Value Solution)
Recommended: CHINT NC1-1250H/33, Delixi CJX2-1250H/33
Advantage: 30–50% lower price than imported brands, meets general industrial needs.
- Important Replacement Notes
- Current matching: Rated current (AC-1) ≥ 1260A, motor rating (AC-3) ≥ 450kW at 400V.
- Coil voltage: Must match the original system (100–250V AC/DC) to avoid coil burnout.
- Auxiliary contacts: Confirm quantity and type (1NO+1NC) to avoid program changes.
- Mounting dimensions: Verify fit in existing cabinet to avoid re-drilling.
- Short-circuit withstand: For H-version, replacement must have equal or higher short-circuit rating.
ABB 1SFL647088R7011 AF1250H-30-11 is a high-performance 1250A 3-pole contactor. With its wide-range coil, long life, and modular design, it is widely used in industrial motor control and power distribution. Alternatives are available within the ABB range and across brands. Siemens 3RT2076-6AP36 and CHINT NC1-1250H/33 are top imported and domestic choices respectively.
Complete Application Guide for ABB 1SFL647088R7011 AF1250H-30-11
- Product Positioning & Key Features
This is a high-performance H-version 3-pole 1250A contactor from ABB’s AF series, standard model AF1250H-30-11-70.
Rated current: AC-1 1260A (400V) / 1210A (UL); AC-3 450kW (400V)
High-performance H version: Higher short-circuit withstand for harsh industrial environments
Wide-range coil: 100–250V AC/DC universal
Contact configuration: 3NO main + 1NO+1NC auxiliary
Extra-long life: 10 million mechanical operations, 1 million electrical operations
Built-in surge suppression: Protects coil and control circuit
- Industry Applications
- Industrial Motor Control (Core)
| Application | Typical Equipment | Advantages |
| Large motor DOL starting | Pumps, fans, compressors ≤ 450kW (400V) | High short-circuit withstand, wide coil voltage |
| Star-delta main contactor | 630kW-class motors | 1250A capacity for heavy main circuits |
| Soft starter / VFD bypass | Bypass in normal operation | Long life for frequent switching |
| Reversing control | Cranes, winders, hoists | 3-pole suitable for 3-phase reversing |
- Power Distribution & Infrastructure
| Application | Typical Equipment | Advantages |
| LV switchgear main control | Factory distribution panels | 1000V AC rated, 3-pole for 3-phase systems |
| Busbar sectionalizing | Plants, data centers | High reliability for critical power nodes |
| Capacitor bank switching | Reactive power compensation | High current withstand for inrush currents |
| UPS / inverter output | UPS, PV/wind systems | Wide coil compatible with UPS power |
- Heavy Industry & Harsh Environments
| Application | Typical Equipment | Advantages |
| Metallurgy | Rolling mills, furnaces, cranes | -25~+70C, high short-circuit withstand |
| Mining | Hoists, crushers, conveyors | Vibration-resistant, highly reliable |
| Petrochemical | Pumps, compressors, heaters | Corrosion-resistant, long life for hazardous areas |
| Paper & Printing | Paper machines, printing lines | Precise control for continuous production |
- Renewable Energy & Transportation
| Application | Typical Equipment | Advantages |
| Wind power | Converter output, yaw motors | Wide coil, withstands grid fluctuations |
| PV power | Inverter output, combiner boxes | High voltage rating, long outdoor life |
| Rail vehicles | Auxiliary power, AC compressors | Wide coil, shock & vibration resistant |
| Ships & offshore | Deck machinery, pumps, ventilation | Wide temp range, high reliability |
- Building & Infrastructure
| Application | Typical Equipment | Advantages |
| Large commercial buildings | HVAC, water pumps, fans | Global grid compatibility |
| Data centers | Cooling, UPS bypass, genset transfer | High reliability for critical loads |
| Hospitals & airports | Emergency power, elevators, fire pumps | Long life, low maintenance |
- Applications by Functional Requirement
- High-Reliability Applications
Critical production lines (automotive, semiconductor) requiring high MTBF
Safety systems: elevators, cranes, fire equipment
- Frequent Operation Applications
Automated lines (packaging, assembly) with high cycling rates
Material handling: AGV charging, conveyor switching
- Global / Export Applications
Export machines requiring global grid compatibility
Multinational factories with unified component standards
- Space-Limited Applications
Compact control panels using modular design
- Selection Matching Guide
| Requirement | Priority | Reason |
| Direct control of 400V / 450kW motors | ★★★★★ | Perfect rating match, H-version handles starting inrush |
| Frequent starting (>1 million operations) | ★★★★☆ | Long electrical and mechanical life |
| Global / multi-region projects | ★★★★☆ | 100–250V AC/DC universal coil |
| High short-circuit environments | ★★★★☆ | H-version provides enhanced short-circuit withstand |
| Cost-sensitive projects | ★★☆☆☆ | Standard AF1250-30-11 recommended instead |
- Unsuitable Applications
- DC main circuit control: Designed for AC; use dedicated DC contactors.
- Extra-high voltage: Not for systems above 1000V AC (e.g., 1140V).
- Ultra-low-power loads: 1250A is oversized and inefficient.
- Explosion-proof areas: Standard version not certified; use Ex-certified models.
ABB 1SFL647088R7011 AF1250H-30-11 is a heavy-duty 1250A 3-pole contactor ideal for industrial motor control, power distribution, heavy industry, and renewable energy. It excels in applications requiring high reliability, frequent operation, and global compatibility. You may choose the standard AF1250-30-11 or cross-brand alternatives to balance performance and cost.
