The HW-38F-3Z is a low power relay B2B product page for a heavy-duty socket-mount power relay designed with a 3PDT contact arrangement and a switching capacity up to 40A. It is used to control and isolate higher-current loads in industrial and commercial electrical systems, including motors, solenoids, heaters, and similar equipment, while comparable 3PDT versions are also listed for 10 HP 208V 3-phase motor applications.
For manufacturers, distributors, exporters, wholesalers, and OEM buyers in China, this model is suitable for bulk procurement, replacement projects, and panel integration. Key product features include multiple AC/DC coil voltage choices, dielectric strength up to 2,000VAC between coil and contacts, contact resistance up to 100mΩ, and mechanical life of at least1×105operations. It can be applied in industrial control cabinets, commercial power equipment, electrical control panels, automation systems, and custom relay socket assemblies where stable switching and easy maintenance are required.
Model Description
| HW | 38F | 3 | Optional | Optional | D | VDC |
| ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ |
①Enterprise code: Hangwang Electric
②Serial number: 38F
③Number of contact groups: 3
④Contact form: (Z-conversion type H-normally open type D-normally closed contact)
⑤Mounted type: P: PCB mounted type No letters: plug-in mounted
⑥Auxiliary function: D/CR-Inhibitory protection
⑦Coil voltage: (DC: direct voltage AC: alternating voltage)
Contact parameters
| Contact form | 3Z,3H,3D |
| Contact load | 40A |
| Maximum switching voltage | 28VAC 40A 240VDC 40A |
| Contact material | Silver alloy |
Operating Coils
| Rated voltage V | DC12V | DC24V | DC110V | DC220V |
| Rated current(+10%)mA | 167 | 83 | 18 | 9 |
| Coil resistance(+10%)Ω | 72 | 289 | 6111 | 24444 |
| Rated power consumption W | 1.5W | |||
| Pick-up voltage（max）V | Less than 75% | |||
| Drop-out voltage (min) V | 10% or more | |||
| Allowable voltage(max) V | Rated voltage ×110% | |||
| Rated voltage V | AC12V | AC24V | AC110V | AC220V |
| Rated current(+10%)mA | 333 | 167 | 36 | 18 |
| Coil resistance(+10%)Ω | 12.6 | 50 | 1069 | 4277 |
| Rated power consumption W | 2.5VA | |||
| Pick-up voltage（max）V | Less than 80% | |||
| Drop-out voltage (min) V | 30% or more | |||
| Allowable voltage(max) V | Rated voltage ×110% | |||
Product Technical Parameters
| Contact resistance | ≤100mΩ |
| Electrical life | ≥5×10⁴times |
| Mechanical life | ≥ 1×10⁶ times |
| Coil voltage | DC: 6-220V AC: 6-380V |
| Suction time | ≤25ms |
| Release time | ≤15ms |
| Between the same pole contacts | 1000VAC/1min(Leakage current 1mA) |
| Between opposite pole contacts | 1500VAC/1min(Leakage current 1mA) |
| Between contact and coil | 2500VAC/1min(Leakage current 1mA) |
| Insulation resistance | ≥100MΩ(500VDC) |
| Ambient temperature | -25°C ~ +55°C |
| Ambient humidity | 35% ~ 80%RH |
| Atmospheric pressure | 86 ~ 106KPa |
| Impact resistance | 10G (Sine wave half pulse: 11ms) |
| Vibration resistance | 10-55Hz (Double amplitude: 1.5mm) |
| Dimensions | 55.5 × 38.2×42mm |
| Weight | About 130g |
Product Size and Installation
FAQ
Is the HW-38F-3Z low power relay suitable for industrial motor control?
Yes. This relay uses a 3PDT contact form and is rated at 40A, and comparable JQX-38F units are specified for 10 HP 208V 3-phase motor loads.
What coil voltages can a supplier or distributor order in bulk?
The series is available in AC/DC 6V, 12V, 24V, 36V, 48V, 110V, and 220V versions, with AC380V also listed.
Does this relay support socket mounting for fast replacement?
Yes. The HW-38F-3Z uses an 11-pin quick-connect termination format intended for socket installation, which helps simplify wiring and maintenance.
What are the main features that matter to OEM and ODM buyers?
Important features include 40A switching capacity, 3PDT contacts, up to 2,000VAC dielectric strength, insulation resistance of at least 100MΩ at 500VDC, and operating temperatures from -25°C to 55°C.
Why is this relay a good choice for China wholesale and export projects?
The standard series already offers multiple coil voltages plus silver alloy or copper contact material options, which makes sourcing more flexible for factory, exporter, and private-label procurement programs.
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