CP1130/12 series 1 pole NO contactor for 1,200 A thermal current and 3,000 V nominal voltage with integreated pre-charging contactor
CP – Modular and compact switchgear
1 pole bi-directional high-voltage contactors, disconnectors, changeover switches for DC and AC for power converters. Rated insulation voltage up to 4,800 V, continuous thermal current up to 2,000 A.
CP1130/20 series 1 pole NO contactor for 2,000 A thermal current and 3,000 V nominal voltage
CP3130/12 series 1 pole CO contactor for 1,200 A thermal current and 3,000 V nominal voltage
With the CP series Schaltbau is introducing once more an innovative concept to the switchgear market. The arc-handling is done exclusively by permanent-magnetic blowout. This patented technology ensures fully bi-directional breaking capability and a more compact design. By reducing dimensions and weight we save you valuable space.
For the first time the universal devices can be configured as NO/NC contactor, disconnector or changeover switch. This enables us to react flexibly to changing customer requirements. The high switching functionality and reliability ensure practical and cost effective operation.
The combination of innovative technology, compact design and high versatility makes the CP power contactors particularly suitable for use in railway and industrial applications. Thanks to its unique modular design, the new product family includes a variety of possible configurations catering to a wide range of applications.
Features
Innovative Design
- Easily configurable as NO/NC contactor, disconnector or changeover switch
- DC bi-directional or AC up to 60 Hz max.
- Exclusively permanent-magnetic blowout – no critical currents and low wear of main contact system thanks to effective arc-handling
- High making capacity, also as disconnector and changeover switch
- Low total cost of ownership, modular and compact
Main contact system
- Conventional thermal current: 600 A/ 1,200 A/ 2,000 A
- Nominal voltage: 1,5 kV, 3 kV
- Double-break contacts
- 1 pole versions
Easy maintenance
- Toolless inspection of main contact tips
- Toolless replacement of the arc chamber
Applications
- Main contactor, optional with pre-charging contactor and high-voltage discharging contact for traction converters and inverters for auxiliary equipment
- Switchgear for various mobile applications in locomotives and multiple-unit trains
- Switchgear for various stationary applications photovoltaic systems, wind turbines, cranes, welding systems,mining
- Switchgear for the configuration of electrical system, e.g. to select from among various energy sources, configure filter for multisystem operations or connect/disconnect DC links
A product tailored to your needs
Find your ideal switching device and configure it as NO/NC contactor, disconnector or changeover switch
Maximum modularity – whether as a contactor, disconnect switch or changeover switch: The CP series offers countless variation options and is the perfect fit for your application. A scalable power interface in combination with different extinguishing chambers according to the switching requirements make the switchgear universally applicable.
In addition to various auxiliary switch groups, a high-voltage discharge contact and/or a precharging contactor can also be integrated.
Specifications
CP series
| Type of voltage | DC (bi-directional), AC (f < 60 Hz) |
| Main contacts, configuration | CP11: 1x, SPST-NO CP21: 1x, SPST-NC CP31: 1x, SPDT-DB |
| Nominal voltage Un | 1,500 V or 3,000V |
| Rated operating voltage Ue | 1,800 V or 3,600V |
| Rated insulation voltage UNm | 3,000 V or 4,800V |
| Rated impulse withstand voltage UNi | 15 kV or 30 kV |
| Pollution degreeOvervoltage category | PD3 OV3 |
| Conv. thermal current Ith | 600 A – 800 A – 1,000 A – 1,200 A – 1,500 A – 2,000 A |
| Utilization category | A2 |
| Rated short-time withstand current Icw | 15 kA max., series-specific |
| Contact material main contacts | AgSnO2 |
| Pre-charging contactor | CPP series, optional, CP11xx-12, CP11xx-15, CP11xx-20: Integrated, factory mounting CP11xx-06, CP11xx-08, CP11xx-10: Separate, mounting on customer side |
| High-voltage discharging contact | CPD, optional |
| Aux. contact | 4 max., w/o HV discharging contact 1x S870 (a1), 1x S870 (b0), 2x S826 or 4x S826 |
| Coil voltage Us | 24 / 36...60 / 72...110 V DC Mono or bistable with integrated PWM module |
| Coil tolerance | –30% ... +25% Us |
| Coil power consumption | Pull-in: 225 W max.@ 250 ms max. Hold: <10 W |
| Coil suppression | Integrated PWM module (electronic coil controller with suppressor diode) |
| Mechanical endurance | Coil design monostable: > 1 million operating cycles Coil design bistable: > 200.000 operating cycles |
| Vibration / Shock (IEC 61373) | Category 1, class B |
| Mounting orientation | Horizontal, vertical (do not mount upside down) |
| IP rating (IEC 60529) | IP00 |
| Temperature range | –40 °C ... +70 °C |
| Storage temperature | –40 °C ... +85 °C |
| Weight | Series-specific |
Contactors for high switching capacities
Due to their dielectric strength and heavy-duty capacity, they are used in a wide variety of industries. They form an important unit in many electrical installations and are used where dealing with larger loads is required.
What is a power contactor?
Simply put, it is an electromagnetic switch. Compared to relays, which do not have auxiliary contacts, they are mainly used when turning on high power. Similar in some ways to relays, they provide additional safety because power systems can be controlled remotely. The device controls the ON-OFF switch, turning it to the off position when the voltage is gone and the circuit de-energized. Typical applications include all areas of control and automation technology, electric motors, railroad applications, and renewable energy sources. Common tasks include turning on and controlling electrical heating elements, ventilation, lighting systems and drive motors.
How do they work?
These different types of electrical contactors always work whether switched on or switched off. In this process, the closed state of the load circuit is maintained as long as power flows through the control circuit. This process is called “monostable switching”. During activation, they cannot move to the rest position.
The structure of a power contactor
It usually consists of the following components:
- Housing
- Solenoid coil
- Coil core
- Metallic armature
- Switching contacts
- Armature return spring
- Arc quenching chamber
The metallic armature is located in the coil and is attracted when a magnetic field is generated by the coil. This moves the power contacts on the contact bridge and enables the user to control them electrically by either opening closing them.
The armature return spring ensures that it is switched into the off position as soon as the voltage is gone – the contacts or current-carrying part of the contactor, are thus back in their original position during power-cutoff.
An arc occurs inside when the contacts are disconnected. This is extinguished safely with the aid of the arc-extinguishing chamber.
Auxiliary and power contactors compared
An auxiliary contactor is designed for low electrical currents. With a power contactor, high currents from approx. 600 amps can be switched, whereas auxiliary ones are designed for smaller loads. The auxiliary contactor basically has the same function as a relay, but looks more like a contactor. They can be used together, auxiliaries primarily perform a control and switching function. For example, an auxiliary contactor can also be used in a control circuit to control a power contactor.
What are the differences between contactors and relays?
The differences between contactors and relays are mainly in the areas of application, because their functions are relatively similar. One main difference is that the former, in contrast to relays, are designed to switch large loads.
Another difference: Relays are single-break, whereas contactors are double-break. This characteristic plays an important role when used in safety functions.
Furthermore, relays do not have an extinguishing chamber or auxiliary contacts.
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