High-voltage relay with 1 pole NO contact
R400 – 1 and 2 pole AC and DC high-voltage relays for railway applications
High-voltage precharge or measuring relays for test and measurement systems, suitable for DC and AC, with a rated impulse withstand voltage of up to 10 kV and continuous currents of up to 25 amps.
R411
R431
High-voltage relay with 1 pole CO contact
R412
High-voltage relay with 2 pole NO contact
R432
High-voltage relay with 2 pole CO contact
The new, compact R400 high-voltage relay has been specially developed for use in railway applications. Used in test systems, it ensures electrical safety during testing by isolating all non-active components during high-voltage and insulation tests. Equally suitable for AC and DC, this robust device switches currents up to 25 amps during protective conductor testing. The open main contact system can withstand voltages of up to 10 kilovolts and can be easily integrated. The R400 is also suitable as a pre-charge contactor for limiting high inrush currents to protect main contactors. Special versions without economy circuit are available for this purpose. The R400 high-voltage relays are therefore a cost-effective and safe solution for demanding applications that require the highest safety standards.
Features
Modular configurable main contact system
Available in 1- and 2-pole versions for AC and DC applications. The contact system can be flexibly configured as a normally open or changeover contact to meet the specific requirements of the test system.
Permanently low power dissipation
The contact bridge with large contact tips ensures uniform contact and consistently low contact resistance.
Hassle-free load disconnection for continuous currents
The main contact system ensures reliable switching function for both positive and negative polarity, regardless of the direction of current flow. The bidirectional high-voltage relay thus enables hassle-free load disconnection for currents up to 25 amps, regardless of polarity.
Easy installation and high installation compatibility
Simple, screwless DIN rail mounting in accordance with industry standards. All connections for main contacts and coil drive with flat plug connections. No additional fastening components are required for installation.
Low energy consumption
PWM module for coil control with precise parameterization, low pull-in and holding power for reduced heat generation, and constant pull-in and switching behavior regardless of the ambient or coil temperature.
Maximum performance and protection
Due to its special design, the R400 has generously dimensioned clearances in the contact area despite its compact design. The open contact can withstand voltages of up to 10 kilovolts, which is significantly higher than the impulse withstand voltage required by standards.
Applications
Pre-charging
The R400 is also suitable as a pre-charging contactor for limiting high inrush currents to protect main contactors.
High-voltage measuring relays
The R400 ensures electrical safety in test systems by isolating all non-active components during high-voltage and insulation tests.
Specifications
R400
| Type of voltage | DC bi-directional / AC (f ≤ 60 Hz) |
| Main contacts, configuration | 1x NO or 1x (NO+NC) 2x NO or 2x (NO+NC) |
| Switching voltage max. U | 1,500 V |
| Rated operational voltage Ue | 1,000 V |
| Rated insulation voltage Ui | 1,000 V @ PD3 1,500 V @ PD2 |
| Bem.-stoßspannung Uimp | 10 kV |
| Rated impulse withstand voltage | OV2 |
| Dielectric strength | Pole – Pole: 10 kV Pole – Coil: 12.8 kV |
| Conventional free air thermal current Ith | 25 A @ 4 mm2, 40° C |
| Rated operational current Ie | 0.5 A @ 1,000 V |
| Kurzzeitstromfestigkeit Icw | 450 A |
| Rated short-time withstand current Icm | NO: 900 A NC: 25 A |
| Terminals | Flat tabs 6.3 x 0.8 mm |
| Aux. switches | — |
| Coil control supply voltage Us | 24 V DC |
| Coil current consumption @ Ta = 20° C | Pull-in: < 1,000 mA Holding: < 110 mA |
| Coil tolerance | -30 … +25 % Us |
| Coil suppression | PWM module |
| Terminals | Flat tabs 4.8 x 0.8 mm |
| Shock / Vibration | Category 1, Class B |
| Mounting position | vertical / horizontal |
| Degree of protection | IP00 |
| Mechanical endurance | < 5,000,000 operating cycles |
| Operating temperature | -40° C … +85° C |
Certifications and approvals
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