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Product Specification, Description, Applications, Advantages, Related Models, and FAQ
The ABB 70BK03c-E, identified by reference designations HESG447440R0001 and HESG 447440 R3, is an industrial control switching module designed for reliable performance in medium-duty control and distribution applications. This product is engineered to provide safe electrical switching functionality while minimizing wear and enhancing system operability in demanding industrial environments.
It is commonly utilized in power control boards, automation panels, motor control centers, and equipment control racks. The architecture of the 70BK03c-E allows for precise control of electrical circuits, helping technicians and engineers manage and direct power flows in coordinated industrial systems.
The design assimilates robust electrical connections, optimized contact mechanics, and a housing structure that supports long operational life. The device serves as a key element in electric control configurations where durability and repeatability of contact performance are critical.
| Parameter | Specification |
|---|---|
| Model | 70BK03c-E |
| Reference Numbers | HESG447440R0001 / HESG 447440 R3 |
| Product Type | Industrial Switching / Control Unit |
| Rated Operational Voltage | Up to 690 V AC |
| Rated Current | 100 A |
| Control Voltage Options | 24 V DC / 110 V AC / 230 V AC |
| Frequency | 50 / 60 Hz |
| Contact Configuration | 3 Closed + 1 Auxiliary Contact |
| Poles | 3-Pole Configuration |
| Mechanical Endurance | ≥ 1,000,000 operations |
| Electrical Endurance | ≥ 100,000 switching cycles at rated load |
| Insulation Voltage | 1500 V |
| Protection Class | IP20 Front / IP00 Rear |
| Terminal Type | Screw / Bolt Connectors |
| Mounting Method | DIN Rail or Direct Panel Mount |
| Operating Temperature | -25°C to +60°C |
| Storage Temperature | -40°C to +85°C |
| Dimensions (H × W × D) | 170 × 95 × 85 mm |
| Weight | 1.15 kg |
| Compliance | Industrial Control & Power Distribution Standards |
The ABB 70BK03c-E is a control switching element designed to facilitate electrical power control in medium power industrial systems. It is built with a combination of robust mechanical linkages, precision electrical contact materials, and a compact housing to accommodate installation in a wide range of industrial cabinets and control panels.
This unit is engineered to operate under fluctuating loads with minimal degradation to contact surfaces. The multiple control voltage options allow for seamless integration with various logic systems, relays, and control circuits. The advanced contact arrangement provides both main switching action and auxiliary feedback to external monitoring equipment.
The product’s construction ensures that it can withstand mechanical vibration, moderate shock, and contamination levels typical in industrial production areas. Because of this, it retains electrical clarity and response accuracy over a long service life.
The design also emphasizes ease of maintenance, with accessible terminals and clear mounting features that simplify system assembly and service procedures.
The 70BK03c-E is widely used in the following industrial applications:
Power distribution control boards in manufacturing facilities
Motor control centers (MCC) for machinery and conveyors
Industrial automation panels for process control systems
Switchgear assemblies in utility and industrial plants
Control solutions for heavy equipment and drives
Electrical distribution nodes in modular power systems
Backup and redundant switching solutions in critical power systems
This product’s versatility makes it suitable for both constant duty installations and intermittent operational environments.
The ABB 70BK03c-E provides the following core advantages:
Durable Performance: Engineered for high cycle reliability under industrial load conditions.
Flexible Voltage Support: This unit accepts a variety of control voltages, simplifying deployment across diverse systems.
Optimized Contact Mechanics: Low wear rate and stable electrical resistance through numerous switching cycles.
Compact Modular Format: Dimensions that enable efficient use of panel space while allowing for future expansion.
Serviceable Design: Terminal accessibility and mounting options reduce downtime for maintenance.
Wide Operating Temperature Range: Allows use in cold starts and high ambient conditions without performance loss.
These strengths make it well-suited for industrial environments where equipment uptime and operational accuracy are essential.
| Attribute | Description |
|---|---|
| Brand | ABB |
| Product Series | Industrial Control and Switching Devices |
The 70BK03c-E belongs to a set of medium-duty industrial switching and control devices that are designed to deliver reliable electrical control functions across a variety of industrial sectors.
| Model | Function Type | Rated Current | Control Voltage | Weight (kg) |
|---|---|---|---|---|
| 70BK01c-E | Control Switching Unit | 63 A | 24–230 V AC/DC | 0.95 |
| 70BK02c-E | Medium Duty Switching Module | 80 A | 24–230 V AC/DC | 1.05 |
| 70BK04c-E | Higher Current Control Module | 125 A | 24–230 V AC/DC | 1.30 |
| 70BL03c-E | Load Switching Module | 100 A | 24–230 V AC/DC | 1.20 |
| 70BM03c-E | Motor Control Switch | 100 A | 24–230 V AC/DC | 1.25 |
| Model | Product Type | Rated Voltage | Rated Function / Output | Weight (kg) |
|---|---|---|---|---|
| AF18-30-11-11 | Variable Frequency Drive | 380–480 V AC | 1.5–4.0 kW | 1.30 |
| ESB250 | Motor Protection Circuit Breaker | Up to 250 A | Overcurrent Protection | 1.50 |
| OT40F3 | Thermal Overload Relay | 32–40 A | Motor Protection | 0.40 |
| MS335-10 | Contactor | 220–240 V AC | 35 A | 0.45 |
| CP-E 24/15.0 | DIN Rail Power Supply | 24 V DC | 15 A | 0.40 |
Q1: What type of device is the 70BK03c-E?
A: It is an industrial control switching unit designed for reliable electrical circuit engagement in automation systems.
Q2: What voltages can this unit be controlled with?
A: The device supports 24 V DC, 110 V AC, and 230 V AC control inputs for flexibility.
Q3: Where is this product typically installed?
A: It is installed in control cabinets, switchgear assemblies, and automation panels.
Q4: What rated current does the unit support?
A: It supports up to 100 A of operational current.
Q5: Can it operate in harsh industrial conditions?
A: Yes, it is designed to tolerate a wide temperature range and vibration typical in industrial zones.
Q6: What is the mechanical life expectancy?
A: It is rated for at least one million mechanical cycles.
Q7: How is it mounted?
A: The device mounts to standard DIN rails or direct panel mounts for flexible layout.
Q8: Does the unit provide auxiliary feedback contacts?
A: Yes, it contains auxiliary contact points for external monitoring and control.
Q9: Does it require routine calibration?
A: Normal maintenance includes inspection and confirmation of tight electrical connections, not calibration.
Q10: Can it be integrated with automated logic controllers?
A: Yes, the control interface allows direct communication with automation logic systems.