The small dimensions of CWB contactors lead to an overall reduction in the size of electrical panels compared to traditional contactor solutions with the same specification, with up to 40% more space than other products in certain current ranges.
Specifications
| Rated insulation voltage Ui (pollution degree 3) - IEC 60974-4-1 | 1000 V |
|---|---|
| Rated insulation voltage Ui (pollution degree 3) - UL, CSA | 600 V |
| Rated operational frequency - minimum | 25 Hz |
| Rated operational frequency - maximum | 400 Hz |
| Mechanical lifespan (AC) | 6 million |
| Mechanical lifespan (DC) | 6 million |
| Electrical lifespan AC3 | 1.6 million |
| Degree protection main terminal | IP10 |
| Degree of protection IP (IEC 60529) - Control circuit | IP20 |
| Rated current | 50 A |
| Rated current AC4 | 21 A |
| Rated current AC1 | 90 A |
| Rated operational voltage Ue - IEC 60947-4-1 | 1000 V |
| Rated operational voltage Ue - UL/CSA | 600 V |
| Height | 115 mm (4.53 in) |
| Width | 54 mm (2.13 in) |
| Depth | 120.7 mm (4.75 in) |
| Weight | 0.91 kg |
Contacts
Available on all items of CWB line, the 1NO + 1NC configuration covers the vast majority of applications. They have a self-cleaning feature, providing high reliability when switching low voltages and currents (17 V / 5 mA). For cases where more auxiliary contacts are required, there are common contact blocks (accessories) for the entire CWB range.
Surge Suppressors
Developed using plug-in technology, the surge suppressor blocks are housed in the contactors so that they take up no additional space. In order to prevent current or voltage surges in the control circuit, the suppressors are available in varistor, resistor-capacitor, diode and zener diode versions. CWB contactors with electronic control already have an internal surge suppressor included.
Interlocking
The CWB range has mechanical interlocks that are easy to install and do not add lateral space between the contactors. This feature ensures that the contactors are fixed side by side, resulting in better use of internal space in electrical panels.
Applications
The characteristics of the CWB contactors make them suitable for applications in many different segments:
- Paper & Cellulose
- Wood
- Cement
- Mining
- Petrochemical or chemical
- Steel plant
- Metallurgy
- Refrigeration
- Sugar & Alcohol
- Fans
- Pumping systems
- Machines and processes in general
- Irrigation and pumping systems
- Buildings
- Load lifting