Japan, Watanabe
Watanabe WPD-A20 SPD for signal
Made in Japan
Manufacturer: Watanabe Electric Industry Co. Ltd
Model: WPD-A20
This product protects measuring equipment from lightning surges.
Features
- SPD for 4 to 20mA DC signal for instrumentation
- Compliant with JIS C 5381-21
- Sufficient protection capability
- Compatible with DIN rail for easy installation in the panel
- Plug-in type with excellent maintainability
Specifications
| Rated input voltage | DC24V |
|---|---|
| impulse durability | 10kA x 10 times (C2: 8/20μs) 1kA x 2 times (D1: 10: 350μs) |
| Voltage protection level (Up) | 60 V or less (line to line) 400 V or less (to ground) |
| internal series resistance | 2.2Ω±20% |
| limiting voltage | 45V (line to line) |
| response time | 3 ns (line to line) 0.1 μs (to ground) |
| Operation start voltage | 34 V or more (between lines) |
| discharge start voltage | 150 V or more (to ground) |
| limiting voltage | 45V (line to line) |
| Operating temperature and humidity | -20 to +60°C 5 to 95% RH |
| External dimensions (HWD) | 69×32.4×69mm |
| mass (weight) | about 70g |
| Compliant standard | JIS C 5381-21 Category C2, D1 |
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