STT TYPE TEST SWITCH
FEATURES
Conformity with major standards
STT type conforms to IEC60497-3 and applies to UL414.
Open-Circuit prevention
Internal circuit of A and AS units (for Current Circuit) is double, which certainly prevents Open-Circuit during inserting a plug.
Efficient wiring work by Up-Screw Terminal
Up-Screw terminal makes wiring work more efficiently.
Wire dropping-off prevention
The rib on the terminal portion leads a ring tongue to proper position. This structure prevents improperconnection of the screw and ring tongue.
Easy voltage test by general clips
Voltage circuit testing can be easily conducted by general clips like an alligator clip as well as dedicated plugs.
High contact reliability by 4-point contact
The multi point contact structure of clips enhances contact reliability.
Standard: IEC60497-3, UL414
| STT type | |||
|---|---|---|---|
| Rating | Rated insulation voltage (Ui) | 690V 250V (AS unit, close condition) |
|
| Rated Impulse Withstand Voltage (Uimp) | ±6kV ±2.5kV (AS unit, close condition) |
||
| Conventional Free Air Thermal Current (Ith) | 30A | ||
| Rated Making and Breaking Capacity | 250V AC (COSφ=0.95) 0.15A AC 250V DC (L/R=1ms) 0.15A DC |
||
| Rated Short-Time Withstand Current (Icw) | 360A AC (COSφ=1) - 1sec | ||
| Rated Short-Circuit Making Capacity (Icm) | 250V AC 50A - 50msec (COSφ=1) | ||
| Rated Operational Voltage (Ue) | 250V | ||
| Rated Operational Current (Ie) | 0.1A | ||
| Utilization Category | AC-21B, DC-21B | ||
| Rated Connecting Capacity | 0.75-5.5mm2 (AWG18-10) | ||
| Screw size | M4X9 | ||
| Clamping Torque | 1.2N･m (Terminal), 0.8N･m (Plug) |
||
| Standard operating condition | Ambient Air Temperature | Performance Guarantee | -5 to 40℃ |
| Usable | -25 to 70℃ | ||
| Storing temperature | -40 to 85℃(Not freeze) | ||
| Humidity | 45 to 85% | ||
| Altitude | 2,000m max. | ||
| Pollution degree | Degree 3 | ||
