High Voltage Contactors
RER02 Series
The RER02 Series are compact high voltage DC relays designed primarily for pre-charge and auxiliary DC control applications. Despite their small size, these relays provide reliable switching capability for controlled capacitor charging, DC bus discharge, and auxiliary circuit control in modern DC power systems. Featuring a construction and a widely adopted industry-standard form factor, the RER02 Series offers a cost-effective and dependable solution for applications where space is limited and full-size power contactors are not required. These relays are commonly used in electric vehicle power electronics, industrial equipment, and other DC control applications.
- Continuous duty
- 40 A
- System voltage
- 1,000 VDC
- Mechanical life
- 1,000,000 cycles
Features and applications
RER02 at a glance
Features
- Compact DC relay construction
- Optimized for pre-charge and DC control applications
- Industry-standard footprint for easy integration
- Low power coil options available
- Fast operate and release times
- Suitable for capacitive charging and discharge circuits
- RoHS and REACH compliant
Typical applications
- Pre-charge circuits for inverters and DC power systems
- Capacitor charging and inrush current control
- Electric vehicle power electronics
- Industrial DC control and signaling
- Auxiliary DC power switching
- HVAC system controls
Datasheet
Graphs, dimensions, drawings and installation notes are in the RER02 datasheet (Rev F).
Download datasheetDatasheet specifications
RER02 performance
| Contact Arrangement | Form X, SPST NO |
|---|---|
| Max Switching Voltage | 1,000 VDC |
| Dielectric Withstand Voltage (Max Leakage Current: 1 mA) | 3,000 VAC, 1 minute contacts to coil |
| Dielectric Withstand Voltage (Max Leakage Current: 1 mA) | 3,000 VAC, 1 minute across open contacts |
| Continuous Current (4 mm² conductor) | 20 A |
| Continuous Current (13 mm² conductor) | 40 A |
| Overload Current 30 seconds | 80 A |
| Overload Current 1 hour | 30 A |
| Max Break – 30 A @ 450 V | 5 cycles |
| Max Short Circuit Current -0.5 second | 200 A |
| Min Insulation Resistance | 1,000 MΩ @ 500 VDC |
| Contact Resistance (Max) | 5.0 mΩ |
| Contact Resistance (Typical) | 3.5 mΩ |
| Operate Time (Max, incl bounce) | 30 ms |
| Release Time (Max) | 10 ms |
| Shock - Functional, 1/2 Sine, 11 ms | 20 G |
| Shock – Destructive, 1/2 Sine, 11 ms | 50 G |
| Operating Temperature | -40°C to 85°C |
| Ingress Protection | IP54 |
| Mechanical life | 1,000,000 cycles |
| Contact Arrangement | Not available |
|---|
| Coil | 12 VDC | 24 VDC |
|---|---|---|
| Nominal Voltage | 12 VDC | 24 VDC |
| Pick-up Voltage (Max) | 9 VDC | 18 VDC |
| Drop-out Voltage (Min) | 0.8 VDC | 1.6 VDC |
| Coil Resistance | 48 Ω | 192 Ω |
| Coil Power at Nominal Voltage | 3 W | 3 W |
| Voltage | Current | Cycles |
|---|---|---|
| Polarity Sensitive Version | ||
| 450 V | 20 A | 50,000 |
| 450 V | 10 A | 10,000 |
| 450 V | 20 A | 75,000 (MAKE ONLY) |
| 450 V | 30 A | 50,000 (MAKE ONLY) |
| 800 V | 15 A | 50,000 (MAKE ONLY) |
| 1,000 V | 10 A | 30,000 (MAKE ONLY) |
| 1,000 V | 10 A | 250 (BREAK ONLY) |
Table 2 of the RER02 datasheet, Rev F, as printed. Resistive load; 1 cycle = 1 make + 1 break.
Datasheet notes
- Contactor may be used above Max Switching Voltage if the application does not require significant load breaking. Please contact Rincon Power to discuss in more detail.
- Attach cables and busbars directly to the main terminal pad. Do not use washers or other materials between the contactor power terminals and the conductor.
- Continuous current tested with 85°C temperature rise at the power terminals. Terminal temperature should be limited to 150°C.
- Coil terminals are non-polar.
- Contactor is operated by a coil that changes resistance with temperature: Maximum coil voltage will be lower than indicated at temperatures above 25°C, and higher than indicated at temperatures below 25°C.
- Pick-up Voltage and Drop Out Voltage will be lower than indicated at temperatures below 25°C and higher than indicated at temperatures above 25°C.
- Nominal Coil Voltage for Pick-up Current, Coil Current and Coil Power specifications, Current/Wattage will be lower than indicated at temperatures above 25°C and higher than indicated at temperatures below 25°C.
From the RER02 datasheet, Rev F. Download the datasheet for graphs, dimensions and installation.
Part numbers
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Options and part numbers from the RER02 datasheet. Other combinations may be available as custom builds.
All standard RER02 part numbers
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