HF115F-L/12-H3L2TF(610) Hongfa Relay or Contactor (Other) In Stock
Hongfa HF115F-L/12-H3L2TF(610) is a 12 V double-latching coil SPST-NO relay with 16 A contact rating for power switching applications. Features low power consumption latching operation that holds state without continuous coil energization. Available from stock with worldwide shipping.
- Manufacturer
- Hongfa
- Package
- Other
- Pin Count
- 7
- Lifecycle
- ACTIVE
- Category
- Relay or Contactor
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Double latching coil at 12 V DC eliminates continuous coil power draw, reducing standby energy consumption to 0 W after switching
- SPST-NO contact rated for 16 A load current, suitable for residential and light industrial AC/DC switching applications
- Compact PCB footprint with standard pin spacing enables easy integration into power control and automation boards
- Sealed relay construction (610 suffix) provides protection against dust and humidity for reliable long-term operation
Applications
The HF115F-L/12-H3L2TF(610) is designed for energy-saving applications in smart home automation, building management systems, and industrial control panels where the relay must hold its switched position without continuous coil power. Its 16 A SPST-NO contacts are well-suited for controlling lighting circuits, HVAC actuators, and appliance loads up to 250 V AC. The double-latching mechanism makes it ideal for battery-operated systems and remote switching applications where minimizing idle current is critical.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How does the double-latching coil in HF115F-L/12-H3L2TF(610) reduce power consumption versus a standard relay?
A standard relay requires continuous coil current — typically 50 mA to 200 mA at 12 V — to hold the contact closed. The HF115F-L/12-H3L2TF(610) double-latching design uses a brief 12 V pulse to switch state and then retains that position mechanically, drawing 0 W in steady state. This can reduce relay drive power by more than 99% in applications where the relay stays switched for minutes or hours, such as smart meter disconnects or building automation zone valves.
What load can the SPST-NO contact of HF115F-L/12-H3L2TF(610) switch safely?
The SPST-NO contact is rated for 16 A at 250 V AC or 16 A at 28 V DC continuous load. This rating supports common residential branch circuit loads such as lighting fixtures, small motors, and heating elements. Engineers should apply appropriate derating — typically 80% of rated current — for resistive loads in enclosed enclosures, bringing the recommended design current to approximately 12.8 A for continuous operation.
In smart meter or AMI designs, why is the HF115F-L/12-H3L2TF(610) preferred over a non-latching relay?
Smart electricity meters require the disconnect relay to hold its open or closed state even when the meter loses auxiliary power. The HF115F-L/12-H3L2TF(610)'s latching design retains its last switched position without any coil power, meeting IEC 62055 and ANSI C12.1 requirements for disconnect relay hold-state. The 12 V coil also aligns with typical meter auxiliary power rails, simplifying drive circuit design.
Does the (610) suffix on HF115F-L/12-H3L2TF(610) indicate any special environmental protection?
Yes, the (610) suffix designates a sealed relay enclosure that provides protection against dust ingress and humidity, corresponding approximately to an IP40-class seal on the contact cavity. This construction is suitable for relay use in environments with relative humidity up to 85% RH and temperatures from -40°C to +70°C, covering industrial control panels and outdoor meter enclosures where contamination of contacts would otherwise shorten relay service life.
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About Hongfa
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