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Pololu item #:
2482
Brand:
Pololu
Status:
Active and Preferred
The Pololu basic relay carrier modules allow simple control of a single-pole, double-throw (SPDT) switch from low-voltage, low-current control signals. This item includes the basic carrier PCB with a soldered-in 12 V relay, 5mm-pitch terminal blocks for the switch connections, and straight 0.1″ male header for the control connections. The included power relay is an Omron G5LE-14-DC12 and is rated for up to 10 A under most conditions.
Alternatives available with variations in these parameter(s): channels voltage style Select variant…
Compare all products in Relay Modules.
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Pololu basic SPDT relay carrier with 12 VDC relay (assembled). |
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Pololu basic SPDT relay carrier with 12 VDC relay (assembled). |
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Pololu basic SPDT relay carrier with relay energized (servo cable not included). |
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Pinout of Pololu basic SPDT relay carrier for “sugar cube” relays. |
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Pololu basic SPDT relay carrier with dimensions. |
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Schematic diagram for the Pololu basic SPDT relay carriers. |
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Side-by-side comparison of the single and dual versions of the Pololu basic SPDT relay carriers. |
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The Pololu basic relay carrier modules make it easy to control electrically isolated, single-pole, double-throw (SPDT) switches from low-voltage, low-current control signals. The modules are available in single-channel and dual-channel versions with 5 V or 12 V power relays—Omron G5LE-14-DC5 and G5LE-14-DC12 (1MB pdf), respectively—and with a variety of connector and assembly options.
The following table lists the available Pololu basic SPDT relay carrier options:
Channels | Board size | Mounting holes |
DC power jack option |
Relay coil voltage |
Coil resistance |
Active current at rated voltage |
Connector and assembly options | Item # | Price | |
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![]() Single-relay |
1 | 1.15″ × 1.0″ | 4× 0.086″ (#2 or M2) |
no | 5 V | 63 Ω | 80 mA | • with JST SH-style connector, assembled | 5662 | $7.95 |
• with 0.1″ headers, assembled | 2480 | $7.95 | ||||||||
• with 0.1″ headers, partial kit | 2481 | $6.95 | ||||||||
12 V | 360 Ω | 34 mA | • with JST SH-style connector, assembled | 5663 | $7.95 | |||||
• with 0.1″ headers, assembled | 2482 | $7.95 | ||||||||
• with 0.1″ headers, partial kit | 2483 | $6.95 | ||||||||
N/A | N/A | N/A | • carrier board with JST SH-style connector only (no relay) | 5664 | $3.95 | |||||
• carrier board only (no relay or connectors) | 2479 | $3.95 | ||||||||
![]() Dual-relay |
2 | 1.5″ × 1.8″ | 4× 0.125″ (#4 or M3) |
yes | 5 V | 63 Ω | 80 mA | • with JST SH-style connector, assembled | 5665 | $14.95 |
• with 0.1″ headers, assembled | 2485 | $14.95 | ||||||||
• with 0.1″ headers, partial kit | 2486 | $13.49 | ||||||||
12 V | 360 Ω | 34 mA | • with JST SH-style connector, assembled | 5666 | $14.95 | |||||
• with 0.1″ headers, assembled | 2487 | $14.95 | ||||||||
• with 0.1″ headers, partial kit | 2488 | $13.49 | ||||||||
N/A | N/A | N/A | • carrier board with JST SH-style connector only (no relays) | 5667 | $7.49 | |||||
• carrier board only (no relays or connectors) | 2484 | $6.95 |
Alternatives available with variations in these parameter(s): channels voltage style Select variant…
This carrier version is assembled with an Omron G5LE-14-DC12 12 V relay, which is rated for up to 10 A under most conditions, and connectors. It has a soldered 3-pin, 5mm-pitch terminal blocks for the switch connections and a soldered 1×3 0.1″-pitch straight male header for the control connections. This control header works with 0.1″ jumper wires and female servo cables.
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The switch portion of the relay (NO, NC, and COM) is accessible on one side of the board via the 3-pin terminal block while the control pins (EN, VDD, GND) are routed to the 1×3 male header on the other side. The 12 V relay coil is powered by supplying 12 V across the VDD and GND pins, and it is activated by a digital high (2.5 V to 20 V) control signal on the EN pin. The control signal is fed directly to a BSS138K N-channel MOSFET, which in turn actuates the relay coil when the control voltage exceeds approximately 2.5 V, up to a maximum of 20 V (see BSS138K datasheet (517k pdf) for details). Red LEDs on either side of the relay light up when the relay coil is active. The carrier board has four mounting holes that work with #2 or M2 screws.
The relay switch terminals COM (common), NO (normally open), and NC (normally closed) are routed on the PCB with a minimum clearance/creepage of 60 mil (1.5 mm) from other copper. The copper traces are designed to be at least 45 mil (1.1 mm) from the board edges, though manufacturing variations in the board edges can make those distances slightly lower.
In most applications, the current and voltage ratings for the module will match the ratings of the relay used. Maximum current, maximum voltage, and life expectancy are interdependent; we therefore recommend careful examination of your relay’s datasheet.
Warning: This product is not designed to or certified for any particular high-voltage safety standard. Working with voltages above 30 V can be extremely dangerous and should only be attempted by qualified individuals with appropriate equipment and protective gear.
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Schematic diagram for the Pololu basic SPDT relay carriers. |
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This schematic is also available as a downloadable pdf (119k pdf).
Size: | 1″ × 1.2″ × 0.9″ |
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Weight: | 16 g |
Channels: | 1 |
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Voltage: | 12 V |
Partial kit?: | N |
Style: | assembled with relays, 0.1″ headers, and 5mm terminal blocks |
PCB dev codes: | rly01a |
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Other PCB markings: | 0J7111, 0J7194 |
This DXF drawing shows the locations of all of the board’s holes.
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