VELLEMAN VMA400 Channel Relay Module
( Brand: Velleman ), ( Manufacturer Part Number: VMA400 ), ( Part Type: Module ), ( Is Discontinued By Manufacturer: No ), ( Package Dimensions: 6.14 X 3.35 X 1.5 Inches; 0.01 Ounces ), ( Item Length: 6.14 ), ( Item Height: 1.5 ), ( Item Width: 3.35 )
Review VELLEMAN Channel Relay Module
The Velleman VMA400 Channel Relay Module is an versatile and reliable electronic device designed for various automation applications. This module features four opto-isolated, normally open, SPDT (Single Pole Double Throw) relays, each capable of handling a maximum current of 5 amperes and a voltage up to 250 volts AC or DC.
The opto-isolated design of the VMA400 ensures the safety and reliability of the system by electrically separating the input and output circuits. The relays are actuated by infrared phototransistors, which receive signals from the input sides. This design also eliminates the need for a common ground between the input and output sides, making it suitable for use in applications where ground loops could cause issues.
The VMA400 is housed in a robust and compact plastic enclosure, measuring 150 x 85 x 25 mm (LxWxH), with a mounting plate on the bottom for easy installation. The module has 16 gold-plated screw terminals, labeled for easy identification of input and output connections. The terminals can accommodate wires up to 2.5mm (AWG 10) in diameter.
The module's operation can be controlled via the front panel switches or by external signals. Each relay can be manually activated or deactivated using the corresponding front panel switch. Additionally, the relays can be controlled by external signals through the use of the NO (Normally Open) and NC (Normally Closed) terminals. The VMA400 also includes a diode across each relay coil to protect against inductive kickback.
The Velleman VMA400 Channel Relay Module is an ideal solution for various automation applications where multiple relays are required, and opto-isolation is necessary. It offers excellent isolation, reliability, and versatility in a compact and easy-to-use package.
The Velleman VMA400 is a 4-channel opto-isolated relay module, which can be used to switch AC or DC loads safely and efficiently while keeping the control circuit and the load circuit isolated from each other. Here are some pros and cons of buying this module:
Pros:1. Opto-isolated design ensures safe operation, especially when working with AC loads or sensitive control circuits.
2. Each channel can switch a maximum load of 2A at 250V AC or 30V DC. This is sufficient for most low-power applications.
3. Compact size makes it easy to integrate into most projects.
4. The module comes with diodes to protect against inductive loads and flyback voltage.
5. It can be controlled using either AC or DC signals, making it versatile.
Cons:1. The maximum load capacity is relatively low, which may not be suitable for heavy-duty applications.
2. It may not be the best choice for applications that require fast switching times.
3. The module does not come with an enclosure, so it may need to be mounted in a protective housing for some applications.
In conclusion, the Velleman VMA400 is an excellent choice for low-power applications that require safe and efficient relay switching with opto-isolation. Its compact size, versatile control options, and protective diodes make it a valuable addition to many projects. However, its relatively low maximum load capacity and slower switching times may limit its use in heavy-duty or high-speed applications.
Recommendation:If you are looking for a reliable and cost-effective opto-isolated relay module for low-power applications, the Velleman VMA400 is an excellent choice. It offers safe and efficient switching, with protective diodes and versatile control options. However, if you require higher load capacity or faster switching times, you may want to consider other options.
Details:
Fast Delivery. Indicator Leds for relay output status.
part #: vma400 prices
- $9.99-$11.99
specifications gardoremo:
- brand: Velleman
- mpn: Vma400
- part type: Module
- is discontinued by manufacturer: No
- package dimensions: 6.14 X 3.35 X 1.5 Inches; 0.01 Ounces
- item length: 6.14
- item height: 1.5
- item width: 3.35
shipping gardoremo:
- class: Expedited
- service: Expedited
- type: Fixed
- cost: $0.00
- transit: 4-7 Days
seller gardoremo:
- # reviews: 60
- rating: 100.0%
- city: Flint, Michigan
returns gardoremo:
- policy: No Returns
payments gardoremo:
- credit card: Diners-club
- wallet: Apple-pay
- other
offer gardoremo:
- availability: In Stock
- started: November 1, 2025
- options: Ship-to-home
- quantity: 1
- sold: 0
general gardoremo:
- condition: New
- Building Hardware > Garage doors Openers > Garage Door Remotes
