In the daily operation of Changeover Switches, it is often overlooked that there exists a variety of types, each with distinct features. These variations include differences in Switching Angle, the presence or absence of an internal bridge, whether they have a self-return mechanism, and whether they are designed for single-phase or three-phase applications. To aid in making informed choices, we will detail these types below.
Amperage Rating:
The Changeover Switches most frequently employed typically have ratings of 20A or 63A. However, our production capabilities extend to switches with ratings of 10A, 16A, 20A, 25A, 32A, 40A, 63A, 125A, and 160Amps. This current rating signifies the Ith value, which is crucial to consider. For instance, if your application requires the use of AC-3 with a current that may peak at 20A, you should select a switch with an Ith rating of 32A to ensure compliance with the necessary specifications. It is important to note that different manufacturers may offer varying product parameters. Konrak’s transfer switches, consistently meet and exceed the standards, having easily obtained TUV/SUD certifications, and our parameters often surpass those of other manufacturers.
Internal Bridge：
This detail is crucial, as the presence or absence of an internal bridge will directly influence the functionality of the switch. To illustrate the distinction between switches with and without internal bridges, let’s employ diagrams, as discerning this solely by the switch’s appearance can be challenging.
From the image above, you can observe the differences of 2/4, 6/8, 10/12, and 14/16, with or without a bridge. Should the switch you’ve acquired come equipped with a bridge, yet you find it unnecessary for your practical application, you will be unable to utilize it unless you disassemble the switch and take out internal bridge. Conversely, if the switch lacks a bridge, you can simply add wires to the exterior to make it operational.
Single Phase and Three Phase：
When customers inquire about our changeover switches during the purchasing process, they often ask if these switches are suitable for three-phase circuits. Indeed, our range of changeover switches is versatile and can operate within a variety of voltage ranges, including 24V, 110V/120V, 220V/240V, and 380V/440V, making them compatible with both single-phase and three-phase electrical systems. The suitability for a particular circuit type largely depends on the wiring configuration and the specific type of switch required. Typically, single-phase circuits utilize 2-pole changeover switches, whereas three-phase circuits necessitate the use of 3-pole or 4-pole changeover switches. It is essential to verify the wiring method of your circuit prior to selecting a switch to ensure you choose the correct one for your application.
Switching Angle：
Changeover switches typically feature a switching angle of 90 degrees, 60 degrees, or 45 degrees. In theory, a larger switching angle between gears is advantageous, as it allows for a greater arc distance when the contacts part, enhancing circuit safety. Nevertheless, when taking into account the tactile feedback during operation and customer preferences, a 60-degree angle is often favored, succeeded by 90 degrees, and then 45 degrees.
Mounting Ways：
Indeed, Changeover Switches offer a range of installation options to suit various applications. The prevalent method is panel mounting, typically fixed with four screws, while the second most popular choice is installation within an IP65 waterproof enclosure. Furthermore, you have the flexibility to opt for a 2-hole mounting configuration with hole spacings of 28mm, 30mm, or 36mm, single-hole mounting with a diameter of ø22mm, or DIN-rail mounting, among others. The choice is yours, depending on your specific usage requirements. Simply inform us of your preferences, and we will select the optimal switch to meet your needs.
contact – Konrak Switch Factory
Whether to have OFF position:
Changeover switches are not limited to a mere 1-0-2 functionality. Certain circuits do not necessitate the presence of an OFF state, allowing for a direct switching between position 1 and position 2.
Spring Return or Not：
In extremely uncommon usage scenarios, it may be necessary for the Changeover Switches to Spring Return to Position 0 once the operator releases the knob, or to have a spring return feature on one side. The diagrams below are provided for reference purposes.
Should you require additional contact diagrams, please do not hesitate to contact us.
contact – Konrak Switch Factory
