1Pc HANDOUK HL3-2A-12S 12VDC Power Relay — 6-Pin DPDT, 5A 250VAC

Handouk · HL3 Series · 12VDC Coil · 2 Form C (DPDT) · In stock

The Handouk HL3-2A-12S is a miniature 6-pin (DPDT / 2 Form C) power relay designed as a cost-effective drop-in for general-purpose industrial control panels. It carries a 12 V DC coil and a 5 A / 250 V AC contact rating in a transparent polycarbonate housing, with a pin footprint that mirrors common industry references such as the Omron G2R-2A and the Finder 55.34. KOEED stocks the Handouk HL3 family for engineers building or maintaining PLC I/O relay boards, and the unit is ready to ship worldwide from our China sourcing network.

1. Key Technical Specifications / Overview

The HL3-2A-12S belongs to Handouk’s HL3 series of miniature PCB- and socket-mount relays. The suffix breaks down as 2A = 2 Form C (DPDT) contacts and 12S = 12 V DC coil, a combination widely used on 24 V DC rail-derived control circuits and on 12 V DC battery systems. The full electrical and mechanical envelope is summarized in the ledger-style table below — these are the figures you will need to compare it against the relay you are currently designing in or replacing.

The HL3-2A-12S slots cleanly into the same PCB hole pattern and socket bases as the legacy Handouk HF115F family, which is one of the reasons it has become a common industrial relay pick on Chinese-built control boards. The transparent cover lets maintenance staff see contact state at a glance — useful when you are chasing an intermittent fault in the field.

2. Application Scenarios / Where It Fits

A 12 V DC DPDT relay with a 5 A contact envelope is the workhorse component for signal-level switching in panel builders’ sub-assemblies, on PLC digital output backplanes, and inside machine OEM enclosures. Across the nine brands KOEED covers — Allen-Bradley, Siemens, Mitsubishi, Omron, Fanuc, Schneider, Yaskawa, Panasonic and KEYENCE — this size class of relay is found in essentially every factory environment where a low-power digital output has to drive a higher-power load.

• PLC digital output expansion boards — used as the electromechanical stage after a 24 V DC PLC output (derated to 12 V DC where the system uses 12 V intermediate rails) on Allen-Bradley 1762/1769, Siemens S7-200/S7-1200, and Mitsubishi MELSEC FX racks.
• Automotive 12 V control panels — battery-direct switching of horns, lamps, fuel pumps, wiper motors, seat heaters and similar loads in test rigs and after-market harnesses.
• Security & access-control systems — driving magnetic locks, sirens and strobe lights from 12 V DC alarm panels where DPDT contacts are required to break both legs.
• HVAC and building-automation panels — switching fan contactors, damper actuators and 24 VAC zone valves from low-power thermostats and BMS controllers.
• Vending, washing-machine and white-goods control boards — a classic location for the HL3 footprint because the transparent cover survives high-humidity wash-down better than open-frame relays.
• Industrial power supplies and battery chargers — used as the main on/off element and as a transfer relay between primary AC and backup DC sources.
• Audio equipment and test instruments — signal routing and speaker-protection duties where a DPDT contact is required.

If you are working with Fanuc CNC I/O Link blocks, Yaskawa MP controller break-out boards, or Schneider Modicon M340 discrete output bases, the HL3-2A-12S typically drops in on the same 6-pin socket and the same wiring diagram, which makes it a useful emergency-replacement part to keep in the spares cabinet.

3. Integration & Wiring Notes

Wiring a Handouk HL3-2A-12S into an existing panel is normally a five-minute job, but it pays to confirm the pin-out against the data-sheet for the specific build revision you have on the bench. The general convention is the same one used by the Omron G2R, Finder 55.34 and HF115F families, which means you can usually re-use the existing socket and wiring harness without rework.

When you are ladder-logic-driving this relay from a CompactLogix or S7-1200 output, remember the PLC output typically sources 24 V DC, not 12 V DC. The cleanest approach is to add a small 24 V-to-12 V DC dropper resistor (~120 Ω, 2 W) in series with the coil, or to use a 12 V DC regulated tap from the panel PSU. If you are unsure about the polarity or the load rating, the PLC engineering toolkit has a coil-current calculator that will let you sanity-check the design before commissioning.

4. Installation & Commissioning Tips

Whether you are building a new panel or repairing an older one, a few habits will keep the HL3-2A-12S in service for the full 50,000 electrical cycles Handouk rates it for. The points below are the ones our applications team walks customers through most often when the relay is being deployed next to Omron, Panasonic and KEYENCE controllers on the same DIN rail.

• Confirm the footprint before power-on. The HL3 series shares a 6-pin layout with several other Chinese OEM relays, but the pinning is not identical to every clone. Always trace pins 13/14 to the coil with a multimeter before you apply voltage.
• Mind the ambient temperature. Rated for 0–55 °C operation, the relay should be mounted clear of heat sinks, transformer cores and other relays that are continuously energised. Keep a minimum of 10 mm air gap above and below the socket.
• Torque the socket screws correctly. 0.5–0.6 N·m is the typical range for the M3 socket terminals. Over-tightening will crack the polycarbonate base and the failure will not show up until the panel is already on site.
• Use a retention clip or spring. The transparent cover does not lock the relay into the socket. A wire clip or the manufacturer’s plastic retainer is essential on vibrating machinery (CNC, compressor, conveyor).
• Add a visible label. A printed tag with the coil voltage and the contact rating makes future maintenance faster and prevents a 24 V coil being plugged into a 12 V circuit by mistake.
• Test under load, not just no-load. A relay that clicks happily on the bench can fail to make contact on a real inductive load. Always verify with the actual motor, solenoid or lamp installed.
• Stock a small quantity of spares. Because the HL3-2A-12S uses the same socket and pin pattern as the older HF115F line, panels built in the 2010s can usually be repaired in minutes by swapping the relay itself.

If you are deploying the HL3-2A-12S alongside Mitsubishi FX-series bases or Fanuc I/O Link breakouts, a final visual check is worthwhile: the relay’s blue Handouk label should face the same direction as the rest of the row so the wiring remains consistent during the next service interval.

5. Procurement, Warranty & Lead Time

KOEED keeps the Handouk HL3-2A-12S on the shelf in single-piece and bulk pack quantities. Pricing follows our standard B2B quote-within-24-hours model — send your part list to Moritta@KOEED.COM and we will come back with current stock, lead time and a unit price on the next business day. Worldwide shipping is arranged through DHL, FedEx or UPS, and quotes can include the full BOM if you are also sourcing Allen-Bradley, Siemens, Schneider, Yaskawa or any of the other brands in our matrix alongside this relay.

For full BOM quotes — mixing the HL3-2A-12S with PLC CPUs, servo drives, HMIs, sensors and other parts from the KOEED catalogue — use the Create a Quote form or email Moritta@KOEED.COM directly with your instrument list. Our sourcing desk will consolidate stock, lead time and freight into a single line-item response.