ABB AF300-30-11-70 1SFL557001R7011 100-250V 50/60Hz AC/DC Contactor 3P

1. Overview of the ABB AF300-30-11-70 1SFL557001R7011

The ABB AF300-30-11-70 (order number 1SFL557001R7011) is a three-pole universal AC/DC contactor with a rated current of 300 A and a coil voltage of 100-250 V AC/DC. It is designed for 50/60 Hz power grids. It utilizes the AF series modular structure, a three-pole main circuit, 1 NO and 1 NC auxiliary contacts, and a built-in arc extinguishing system. It can frequently connect and disconnect high-power motors, transformers, or resistive loads in the AC-3 utilization category, achieving reliable remote control.

2. Core Features:

1. Core Parameters
• Rated current: 300 A (AC-3, ≤40°C)
• Number of poles: 3P (three-pole)
• Coil voltage: 100…250 V AC/DC 50/60 Hz, wide voltage design, suitable for global use
• Auxiliary contacts: 1 NO + 1 NC (11 configurations)
• Rated insulation voltage Ui: 1000 V
• Operating voltage range: ≤690 V AC; ≤240 V DC
• Mechanical life: 10 million cycles
• Electrical life (AC-3): 1.5 million cycles (300 A, ≤440 V)
• Making capacity: I = 10 × Ie (3000 A)
• Breaking capacity: I = 8 × Ie (2400 A)
• Mounting: 35 mm DIN rail or baseplate screw mounting, supports horizontal or vertical mounting
• Wiring capacity: Main circuit 2 × 240 mm² (dual cable) / 1 × 300 mm²; auxiliary circuit 2.5 mm²
• Operating temperature: -40°C…+70°C (without derating to +60°C)
• Certifications: CE, UL, CSA, CCC, EAC, RoHS

2. Feature Highlights
Wide-voltage electronic coil: 100-250 V AC/DC adaptive, compatible with global power grids without coil replacement.
Low power consumption: Power consumption is only 2.3 W after energization, significantly reducing temperature rise and energy consumption within the switch.
Integrated surge suppression: Built-in bidirectional varistor and RC snubber circuits effectively suppress overvoltage during coil shutdown.
Intelligent diagnostics: Built-in coil status indicator LED (green = operation, red = fault) facilitates on-site troubleshooting.
Modular accessories: Add side-mounted or top-mounted auxiliary contacts, pneumatic time delay blocks, mechanical interlocks, and electronic overload relays for easy functional expansion. Quick Wiring: The main terminals utilize a dual cage spring + screw structure, enabling quick plugging and unplugging and repeatable tightening, reducing wiring time by 50%.
Safe Isolation: The main contacts feature a wide opening distance and visible disconnect position, meeting IEC 60947-4-1 isolation requirements and also functioning as a load switch.

3. Typical Applications
• Direct-on-line starting, reversing starting, and star-delta starting main circuits for three-phase AC motors
• Remote start/stop and protection for high-power fans, pumps, compressors, and conveyor belts
• Feeder and bypass switching for low-voltage distribution systems
• DC-side circuit control for photovoltaic inverters and energy storage systems (≤240 V DC)
• Harsh applications requiring wide voltage range and high reliability, such as ships, port machinery, and rail transit

3.Product details pictures

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