High Voltage Contactors

REC45 Series

Name: REC45 Series high voltage DC contactor
Brand: Rincon Power
SKU: REC45

Bi-directionalUL recognized

The REC45 Series are epoxy-sealed high voltage DC contactors designed to provide reliable, cost-effective DC power switching for higher-current applications. Rated for continuous currents up to 500 A and system voltages up to 1,000 VDC, the REC45 Series delivers enhanced electrical performance while maintaining the proven, industry-standard cylindrical contactor form factor. The epoxy-sealed construction with gas fill provides hermetic protection suitable for standard operating environments, while available integrated PWM coil options help reduce holding power and improve system efficiency. Optional auxiliary contacts provide main position feedback and multiple mounting configurations are available. The REC45 Series is widely used across electric vehicle subsystems, humanoid robotics platforms, energy storage systems, and industrial DC power control applications.

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Continuous duty: 500 A
System voltage: 1,000 VDC
Mechanical life: 500,000 cycles
Dielectric withstand: 4,300 VDC

Features and applications

REC45 at a glance

Features

Epoxy-sealed hermetic construction for reliable DC switching
Industry-standard cylindrical contactor form factor
Optional SPST-NO or SPST-NC auxiliary contact for main position feedback
Bi-directional DC power switching
Multiple coil voltage options available
RoHS 2011/65/EU and REACH compliant
CE Certified
UL 60947-4-1 recognized component (File E536262)

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 REC45 datasheet (Rev J).

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Datasheet specifications

REC45 performance

Specifications
Contact Arrangement	Form X, SPST NO
Max Switching Voltage	1,000 VDC
Dielectric Withstand Voltage Contacts to Coil	4,300 VDC, 1 minute
Dielectric Withstand Voltage Across Open Contacts	4,300 VDC, 1 minute
Continuous Current (2 x 127 mm² 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	7,000 A @ 3 ms, 3,000 A @ 1s
Min Insulation Resistance	1,000 MΩ @ 1,000 VDC
Contact Resistance	0.25 mΩ (max) / 0.15mohm (typical) at 300 A
Operate Time (Max, incl bounce)	30 ms
Release Time (Max)	10 ms (max) / 5 ms (typical)
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

Auxiliary Contacts
Contact Arrangement	SPST
Continuous Current	2 A
Minimum Current	1 mA @ 12 V

Coil
Coil	J	M	A	B
Coil Type	PWM (economized)	PWM (economized)	Single (continuous duty)	Single (continuous duty)
Nominal Voltage	9-36 VDC	36-95 VDC	12 VDC	24 VDC
Pick-up Voltage (Max)	9 VDC	28 VDC	9 VDC	18 VDC
Drop-out Voltage (Min)	6 VDC	16 VDC	1.2 VDC	2.4 VDC
Inrush Current (Max), 130 ms max duration, @ nominal voltage	3.8 A (@ 12 VDC)	1.2 A (@ 48 VDC)	0.5 A	0.25 A
Coil Resistance	3.2 Ω	40 Ω	24 Ω +/- 7%	96 Ω +/- 7%
Holding Current	0.17 A @ 12 VDC; 0.09 A @ 24 VDC	0.046 A @ 48 VDC; 0.031 A @ 72 VDC	0.50 A @ 12 VDC	0.25 A @ 24 VDC
Coil Back EMF	0 VDC	0 VDC	55 VDC	55 VDC

Resistive Load Switching (Make / Break Data)
Voltage	Current	Cycles
Bi-Directional Version
450 V	250 A	10,000
600 V	400 A	5,500 (BREAK ONLY)
800 V	300 A	4,000 (BREAK ONLY)
800 V	200 A	10,000
800 V	1,000 A	1 cycle (BREAK ONLY)
1,000 V	100 A	10,000

Table 2 of the REC45 datasheet, Rev J, as printed. Resistive load; 1 cycle = 1 make + 1 break.

Datasheet notes

Product is designed for bi-directional switching. There is no benefit for polarity sensitive version, so this option is not offered.
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 20°C, and higher than indicated at temperatures below 20°C.
Pick-up Voltage and Drop Out Voltage will be lower than indicated at temperatures below 20°C and higher than indicated at temperatures above 20°C.
Pick-up Current, Coil Current and Coil Power are specified at Nominal Coil Voltage. Current/Wattage will be lower than indicated at temperatures above 20°C and higher than indicated at temperatures below 20°C.
Contactor can operate above 85°C ambient as long as terminal temperature is limited to 140°C
Current carry rating for single coil version will be slightly lower because the single coil generates more internal heat than the economized coil. Customer should ensure terminal temperature is limited to 140°C

From the REC45 datasheet, Rev J. Download the datasheet for graphs, dimensions and installation.

Part numbers

Build your REC45 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.

Part number

REC45B1AX

Contact Polarity

Mounting

Coil

Auxiliary Contacts

20 standard part numbers in the REC45 SeriesRequest a quote for this part →

Options and part numbers from the REC45 datasheet. Other combinations may be available as custom builds.