High Voltage Contactors
REC35 Series
The REC35 Series are epoxy-sealed high voltage DC contactors designed to provide reliable, cost-effective DC power switching for a wide range of mainstream applications. Rated for continuous currents up to 500 A and system voltages up to 1,000 VDC, the REC35 Series offers balanced electrical performance and durability while maintaining competitive pricing for production programs. The epoxy-sealed construction provides hermetic protection suitable for standard operating environments, making these contactors a practical choice for OEM applications where value, availability, and proven form factors are prioritized. The REC35 Series is widely used across electric vehicle subsystems, humanoid robotics platforms, energy storage systems, and industrial DC power control applications.
- Continuous duty
- 500 A
- System voltage
- 1,000 VDC
- Mechanical life
- 500,000 cycles
- Dielectric withstand
- 2,200 VAC
Features and applications
REC35 at a glance
Features
- SPST Normally Open High Voltage DC Contactor
- Epoxy-sealed hermetic construction for reliable DC switching
- Industry-standard cylindrical contactor form factor
- Cost-effective solution for production applications
- Optional bi-directional DC power switching
- Multiple coil voltage options available
- RoHS and REACH compliant
- UL recognized component (File E536110). Please refer to file for specific part numbers that are recognized
Typical applications
- Electric vehicle battery pack and power subsystems
- Humanoid robotics power distribution
- Battery energy storage systems (BESS)
- DC charging infrastructure subsystems
- Industrial equipment and machinery
- Auxiliary DC power switching
- Renewable energy and power conversion systems
- AGV Automated Guided Vehicles
Datasheet
Graphs, dimensions, drawings and installation notes are in the REC35 datasheet (Rev B).
Download datasheetDatasheet specifications
REC35 performance
| Contact Arrangement | Form X, SPST NO |
|---|---|
| Max Switching Voltage | 900 VDC |
| Dielectric Withstand Voltage Contacts to Coil | 2,200 VAC, 1 minute |
| Dielectric Withstand Voltage Across Open Contacts | 4,000 VDC, 1 minute |
| Continuous Current (2 x 127mm2 conductor) | 500 A |
| Overload Current 1 minute | 1,000 A |
| Overload Current 5 Minutes | 650 A |
| Make and Break | See Table 2 |
| Max Short Circuit Current -1 second | 3,000 A |
| Min Insulation Resistance | 1,000 MΩ @ 1,000 V |
| Contact Voltage Drop (Max) | 125 mV @ 250 A |
| Operate Time (Max, incl bounce) | 30 ms (25 ms typical) |
| Release Time (Max) | 12 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 | Exceeds IP69, (Hermetically sealed) |
| Mechanical life | 500,000 |
| Contact Arrangement | SPST |
|---|---|
| Continuous Current | 2 A |
| Minimum Current | 1 mA @ 12 V |
| Coil | J, K, L COIL OPTIONS | M, N COIL OPTIONS |
|---|---|---|
| Nominal Voltage | 9-36 VDC | 32-95 V |
| Pick-up Voltage (Max) | 9 VDC | 32 VDC |
| Drop-out Voltage (Min) | 6 VDC | 18 VDC |
| Inrush Current (Max), 130 ms max duration | 3.8 A | 1.3 A |
| Holding Current | 0.17 A @ 12 VDC 0.09 A @ 24 VDC | 0.05 A @ 48 VDC |
| Voltage | Current | Cycles |
|---|---|---|
| Polarity Sensitive Version | ||
| 450 V | 250 A | 5,000 |
| 650 V | 250 A | 200 |
| 1,000 V | 300 A | 1 Cycle, BREAK only |
| Bi-Directional Version | ||
| 450 V | 250 A | 5,000 |
| 650 V | 250 A | 200 |
Table 2 of the REC35 datasheet, Rev B, as printed. Resistive load; 1 cycle = 1 make + 1 break.
Datasheet notes
- Polarity Sensitive versions are marked +A1 and -A2 for the power terminals. For applications that require the contactor to open under load, please ensure current is flowing from the +A1 to the -A2 terminal. For Bi-Directional versions the direction of current does not matter when breaking under load.
- 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.
- Attached cables and busbars directly to the main terminal pad using the recommended install torque. Do not use washers or other materials between the contactor and the conductor. This will ensure the lowest possible contact resistance.
- Avoid excessive coil voltages. Exceeding the ratings on the datasheet may result in high coil temperature and coil failure.
- 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 REC35 datasheet, Rev B. Download the datasheet for graphs, dimensions and installation.
Part numbers
Build your REC35 part number
Choose each option and the part number updates. Only standard part numbers from the datasheet are offered. Copy it, or request a quote for that exact part.
Options and part numbers from the REC35 datasheet. Other combinations may be available as custom builds.
All standard REC35 part numbers
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