B-WS TYPE, BH-WS TYPE DOUBLE-BRIDGE CONTACT CAM-OPERATED SWITCH
FEATURES
High reliability for low-frequency operation
Duble-bridge (Twin) contacts mechanism enhances higher reliability than normal contacts mechanism.
Direct control operation chances by switches are decreasing nowadays, and this switches apply to the requirements for ensuring reliability in case of low-frequency operation.
High reliability by grease-less
High slippery material is adopted for grease-less inside contact units, and grease-less mechanism enhances reliability for long period of time.
STANDARD: NECA C 4520（2002）、NECA C 4522（2002）
| Item | B, BH-WS TYPE (silver contact) | B, BH-WG TYPE (gold contact) |
|---|---|---|
| Rated insulation voltage (Ui) | 600V（250V for rear terminal type and Lamp circuits of indicator lamp type） | 600V（250V for rear terminal type and Lamp circuits of indicator lamp type） |
| Rated current-carrying capacity (Ith) | 30A | 2A |
| Rated operational voltage (Ue) Rated operational current (Ie) |
220V AC-10A （cosφ=0.3 to 0.4）, 220V AC-15A （resistance load） 110V DC-5A （L/R＝40ms）, 110V DC-8A （resistance load） |
12V DC-500mA（resistance load） 24V DC-250mA（resistance load） 48V DC-200mA（resistance load） |
| Short time current-carrying capacity | 200A, 1 sec. | 200A, 1 sec. |
| Max. applicable wire size | 5.5mm2 | 5.5mm2 |
| Screw size | M4×9 | M4×9 |
| Withstand voltage | 2,500V, 1 sec. | 2,500V, 1 sec. |
| Rated impulse withstand voltage (Uimp) | ±7kV (between live portion and ground), ±3kV (between indivisual live portion) | ±7kV (between live portion and ground), ±3kV (between indivisual live portion) |
| Insulation resistance | 1,000MΩ or more | 1,000MΩ or more |
| Contact resistance | 50mΩ max. (initial) | 50mΩ max. (initial) |
| Mechanical life time | 50,000 times or more | 50,000 times or more |
| Electrical life time | 50,000 times or more | 50,000 times or more |
| Shock resistance | 500m/s2 (6 directions) | 500m/s2 (6 directions) |
| Ambient air temperature | -20 to 60℃ | -20 to 60℃ |
| Storing temperature | -40 to 70℃ | -40 to 70℃ |
| Rerative humidity | 30 to 85% | 30 to 85% |
| Altitude | 2,000m max. | 2,000m max. |
| product | document | data type | volume of data | date of update | download |
|---|---|---|---|---|---|
| B-WS TYPE, BH-WS TYPE DOUBLE-BRIDGE CONTACT CAM-OPERATED SWITCH | Catalog | 250.8KB | - | download |
