BENY
BYT Series DC Isolator Switches
Application
The BENY BYT Series DC Isolator Switch, housed in a plastic enclosure, is designed for 1~20KW Residential or Commercial Photovoltaic systems. It is installed between photovoltaic modules and inverters. Featuring an arcing time of less than 3ms, it enhances the safety of solar systems. To ensure stability and a long service life, these products are manufactured with high-quality components. They offer a maximum voltage rating of up to 1200V DC, providing a safe lead among similar products.
Features
- IP66, UV Resistance
- Arcing Time < 3ms
- Earth Terminal
- Compliant with IEC60947-3 and AS60947.3 standards
- Available in 2 Pole and 4 Pole configurations (Single | Double String)
- DC-PV2/DC-21B models support up to 32A at 1200VDC
Appearance Introduction
The front panel of the BYT Series DC Isolator Switch features clear indicators and controls:
- 1. Waterproof Plug: Protects against ingress.
- 2. IP66 Ingress Protection: Indicates high-level protection against dust and water.
- 3. Sealed Plug: Ensures a secure seal.
- 4. Knob: Used for operating the switch (ON/OFF).
- 5. Brand: BENY logo.
- 6. ON: Indicator for the 'ON' position.
- 7. OFF: Indicator for the 'OFF' position.
Visual representation of the switch front panel with numbered components.
Parameters
Electrical Characteristics
Electrical Characteristics of BYT Series DC Isolator Switches
| Parameter |
Value |
| Type | BYT-32, BYT-32M1, BYT-32M2, BYT.1-32, BYT.2-32 |
| Function | Isolator, Control |
| Standard | IEC60947-3, AS60947.3 |
| Utilization category | DC-PV2/DC-21B |
| Pole | 4P (referring to 4-pole configuration, 2-pole also available) |
| Rated frequency | DC |
| Rated operational voltage (Ue) | 600V, 800V, 1000V, 1200V |
| Rated operational current (Ie) | See the next page |
| Rated insulation voltage (Ui) | 1200V |
| Conventional free air thermal current (Ith) | // (refer to specific model data) |
| Conventional enclosed thermal current (Ithe) | Same as / |
| Rated short-time withstand current (Icw) | 1kA, 1s (4, 4S, 4B); 1.7kA, 1s (2H) |
| Rated short-time making capacity (Icm) | 1.7kA, 1s (4, 4S, 4B); 3kA, 1s (2H) |
| Rated conditional short-circuit current (Icc) | 3kA |
| Rated impulsed withstand voltage (Uimp) | 8.0kV |
| Overvoltage category | II |
| Suitability for isolation | Yes |
| Polarity | No polarity, "+" and "-" polarities could be interchanged. |
Service Life/Cycle Operation
Service Life/Cycle Operation
| Category |
Value |
| Mechanical | 20000 cycles |
| Electrical | 2000 cycles |
Installation Environment
Installation Environment
| Parameter |
Value |
| Ingress Protection | Enclosure: IP66, Switch body: IP20 |
| Storage Temperature | -5°C ~ +85°C |
| Mounting Type | Vertically or horizontally |
| Pollution degree | 3 |
| Suitable environment | Outdoor/Indoor |
Rating Data
Rating Data for BYT Series DC Isolator Switches
| Identification |
Rating Data |
| Switch, unenclosed - catalogue number (with DC-PV2 rating) | BYT.1-32, BYT.2-32 |
| Specific dedicated enclosure - catalogue number (with minimum IP56NW rating) | BYT-32 IP66NW |
| Assembly of switch and specific dedicated enclosure - catalogue number | / |
| Ith rated thermal current, unenclosed, at 40°C shade ambient air temperature | 32 amps |
| Ithe rated thermal current, indoors, at 40°C shade ambient air temperature, in a specific dedicated enclosure | 32 amps |
| Ithe rated thermal current outdoors at 40°C shade ambient air temperature without solar effects in a specific dedicated enclosure rated IP66NW | 32 amps |
| Ithe solar current value outdoors at 60°C shade ambient air temperature (see D.8.3.11, table D3), with solar effects in a specific dedicated enclosure rated IP66NW | 29 amps |
Voltage and Current Ratings Table:
| Configuration |
Ue rated operational voltage DC Volts |
Ie; DC-PV2 rated operational current Amps |
I(make) and Ic(break) DC-PV2 4 x Ie Amps |
| ≤600 |
800 |
1000 |
1200 |
| 2 pole |
32 |
32 |
13 |
13 |
32 |
128 |
| 4 pole |
32 |
32 |
32 |
32 |
32 |
128 |
Notes:
- NOTE 1: The rating data in the table is example data and intended to be replaced by relevant actual data.
- NOTE 2: The ratings section for Ue, Ie and I(make)/Ic(break) may include other numbers of poles or pole configurations than shown, based on test evidence.
- NOTE 3: Other data required in D.5.2.4 need not be in a table format.
Terminals / Connection
Terminals / Connection Details
| Parameter |
Value |
| Type | BYT-32, BYT-32M1, BYT-32M2, BYT.1-32, BYT.2-32 |
| Number of poles | 4-pole (specific models may vary) |
| Terminal designation, main circuit | 1; 3; 5; 2; 4; 6; 7; 8 |
| Type of terminal, main circuit | Screw terminal |
| Rated cross section area, main circuit | 4.0-16mm² |
| Type of conductor | 4-16mm² (Rigid: Solid or Stranded), 4-10mm² (Flexible) |
| Number of conductors per terminal | 1 |
| Required preparation of the conductor | Yes |
| Stripping length (mm), main circuit | 8mm |
| Tightening torque (M4), main circuit | Min: 1.2Nm, Max: 1.8Nm |
Dimensions
The BYT Series DC Isolator Switches have the following physical dimensions:
- Overall Width: 99.0 mm
- Overall Height: 170.5 mm (main body), 188.0 mm (total with mounting)
- Depth: 75.0 mm (front view), 100.0 mm (side view), 178.5 mm (total depth), 108.5 mm (mounting depth)
- Mounting Hole Diameter: M25x1.5
Diagram showing front, side, and top views with key measurements in millimeters.
Wiring Diagrams and Configurations
Wiring Diagram for Rated Operational Voltage and Current
The following table details wiring configurations, rated voltages, and currents for different models:
Wiring Diagram for Rated operational voltage Ue (V) & Rated operational current Ie (A)
| Contacts wiring diagram |
600V |
800V |
1000V |
1200V |
Poles in series |
Number of Strings |
Type Number |
Weight kg/PCS |
[Diagram: 2 poles, 2 strings] |
32A | 32A | 13A | 13A | 2 | 2 | 4 | 0.70 |
[Diagram: 2 poles, 1 string] |
50A | 45A | 13A | 13A | 2 | 1 | 2H | 0.70 |
[Diagram: 2 poles, 1 string] |
32A | 32A | 32A | 32A | 2 | 1 | 4B | 0.70 |
[Diagram: 4 poles, 1 string] |
32A | 32A | 32A | 32A | 4 | 1 | 4S | 0.70 |
Visual representations of contact wiring are described textually.
Switching Configurations
Various switching configurations are available:
- Type /: 4-pole configuration.
- Type 2H: 2-pole, 4 Paralleled Poles.
- Type 4B: 4-pole with Input and Output bottom.
- Type 4S: 4-pole with Input on top and Output bottom.
Diagrams illustrate the different pole arrangements and input/output connections for switching configurations.
Bridging Links Installation
Proper installation of bridging links is crucial for safe operation.
Installed Incorrectly: [Description of incorrect installation, e.g., bridging links misaligned or improperly seated.]
Installed Correctly: [Description of correct installation, e.g., bridging links fully seated and aligned.]
Note: Please ensure all connections, including bridging link connections, are tightened before energization.
Illustrations show the difference between incorrect and correct installation of bridging links.
Certifications
- SAA Certified
- CE Marked
- TÜV Rheinland Certified
- CB Scheme Certified
- RoHS Compliant
