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Product Specification, Introduction, Applications, Advantages, Related Models, and FAQ
The ABB 70BK03B-ES, referenced by part numbers HESG447271R2 and HESG447271R0002, is an advanced industrial control and switching device designed to manage medium-power control circuits in power distribution and automation systems. Built for high reliability and consistent performance, this unit is often integrated into complex electrical control panels, motor control centers, and automation racks.
Engineered with precision and rugged electrical architecture, the 70BK03B-ES is optimized for environments with high mechanical load, frequent switching demands, and stringent safety expectations. Its modular design simplifies installation, maintenance, and lifecycle upgrades in industrial facilities.
| Parameter | Specification |
|---|---|
| Model | 70BK03B-ES |
| Reference Numbers | HESG447271R2 / HESG447271R0002 |
| Product Type | Industrial Control / Switching Unit |
| Rated Operational Voltage | Up to 690 V AC |
| Rated Current | 100 A |
| Control Voltage | 24 V DC / 110 V AC / 230 V AC |
| Frequency | 50 / 60 Hz |
| Poles | 3-Pole Configuration |
| Contact Arrangement | 3 Normally Open + 1 Normally Closed |
| Mechanical Life | ≥ 1,000,000 operations |
| Electrical Life | ≥ 100,000 switching cycles at rated load |
| Protection Class | IP20 (front); IP00 (rear) |
| Connection Type | Screw / Bolt Terminal |
| Mounting | DIN Rail / Panel Mount |
| Operating Temperature Range | -25°C to +60°C |
| Storage Temperature Range | -40°C to +85°C |
| Insulation Voltage | 1500 V |
| Dimensions (H × W × D) | 160 × 90 × 80 mm |
| Weight | 1.10 kg |
| Standards Compliance | Industrial Control & Safety Standards |
The ABB 70BK03B-ES is manufactured to serve as a robust industrial switching device appropriate for industrial automation, manufacturing, and power control systems. With its rugged electromechanical design, this unit reliably engages and disengages electrical circuits under load, safeguarding connected equipment and ensuring process continuity.
Internally, high-quality contacts, precision actuators, and reinforced insulation work together to yield predictable electrical behavior across a wide range of environmental conditions. The device supports multiple control voltage options, facilitating integration with various automation and protection relays.
The modular build allows for quick installation on standard rails or panels, and the device can be easily incorporated into larger cubicles and control consoles.
The typical applications for the 70BK03B-ES include:
Power distribution control panels
Motor control centers (MCC)
Industrial automation control racks
Heavy machinery electrical control systems
Manufacturing and process automation facilities
Renewable energy power conversion control
HVAC power distribution and sequencing
Because of its wide voltage tolerance and adaptable control input options, it can serve as a central switching element in both continuous process plants and discrete production lines.
The 70BK03B-ES offers several clear advantages:
High Performance Reliability: Designed for consistent switching under continuous use.
Multi-Voltage Support: Accepts a flexible range of control voltages, making integration straightforward.
Durable Build: Rugged construction ensures long life and reduced replacement cycles.
Compact but Powerful: Space-efficient while supporting substantial current ratings.
Optimized for Industrial Environments: Withstands electrical noise and temperature variations.
Easy to Install and Service: Standardized mounting and clear terminal access reduce installation time.
These attributes result in a device that can be trusted in high-demand industrial electrical setups where safety and uptime are top priorities.
| Attribute | Description |
|---|---|
| Brand | ABB |
| Product Series | Industrial Control & Switching Devices |
The 70BK03B-ES is part of a broad lineup of industrial control units, designed to handle various control, distribution, and automation tasks across multiple industry sectors.
| Model | Function Type | Rated Current | Control Voltage | Weight (kg) |
|---|---|---|---|---|
| 70BK01B-ES | Control / Switching Unit | 63 A | 24–230 V AC/DC | 0.90 |
| 70BK02B-ES | Medium Duty Control Unit | 80 A | 24–230 V AC/DC | 1.00 |
| 70BK04B-ES | High-Current Switching Unit | 125 A | 24–230 V AC/DC | 1.25 |
| 70BL03B-ES | Load Control Module | 100 A | 24–230 V AC/DC | 1.15 |
| 70BM03B-ES | Motor Control Switch | 100 A | 24–230 V AC/DC | 1.20 |
| Model | Product Type | Rated Voltage | Rated Current/Function | Weight (kg) |
|---|---|---|---|---|
| AF16-25-10-11 | Variable Frequency Drive | 380–480 V AC | 0.75–2.2 kW | 1.15 |
| ESB125 | Motor Protection Breaker | Up to 125 A | Circuit Protection | 1.30 |
| OT32F3 | Thermal Overload Relay | 23–32 A | Motor protection | 0.30 |
| MS225-10 | Contactor | 220–240 V AC | 25 A | 0.40 |
| CP-E 24/10.0 | DIN Rail Power Supply | 24 V DC | 10.0 A | 0.30 |
Q1: What purpose does the 70BK03B-ES serve?
A: It functions as an industrial control and switching module for managing electrical circuits and automation pathways.
Q2: What control voltages are supported?
A: This unit supports a flexible range including 24 V DC, 110 V AC, and 230 V AC.
Q3: What environments is this designed for?
A: Industrial control panels, automation racks, and power distribution cabinets.
Q4: What is the rated current capacity?
A: It is rated for up to 100 A of switching capacity.
Q5: How is it mounted?
A: The device may be mounted on DIN rails or standard panel surfaces.
Q6: Can it be integrated with PLC systems?
A: Yes, the control voltage and contact outputs allow direct integration with PLC logic.
Q7: What is the mechanical life expectancy?
A: The mechanical life is rated at one million operation cycles.
Q8: Does it require special maintenance?
A: Routine visual inspection and terminal tightening are generally sufficient.
Q9: Is it suitable for outdoor installations?
A: Only if placed inside enclosures that meet appropriate environmental protection ratings.
Q10: Are spare parts available for service life extension?
A: Yes, modular parts and terminal kits support extended service and field maintenance.