SPD for on site instruments; 2/3/4 wires; mounted in parallel through thread: 3/4 ''NPT, male; C2: 20kV/10kA, D1: 2.5kA/line; intrinsic safety and flameproof: Ex ia IIC T4~T6 Ga, Ex d IIC T4~T6 Gb;
Intrinsic safety certification; explosion proof electrical product certification.
Suitable for 2, 3, 4 wire temperature transmitter, thermal resistor, thermocouple, flow meter, solenoid valve, RS-485, RS-232, etc.
| CZLBX-48 | CZLBX-48-3 | CZLBX-48-4 | |
| Technical data | 2-wire | 3-wire | 4-wire |
| Nominal operating voltage Un | 24V DC | 24V DC | 24V DC |
| Max. continuous operating voltage Uc | 48V DC | 48V DC | 48V DC |
| Nominal discharge current In(8/20µs) | 10kA | 10kA | 10kA |
| Max. discharge current Imax(8/20µs) | 20kA | 20kA | 20kA |
| Impulse current Iimp(10/350µs) | 2.5kA | 2.5kA | 2.5kA |
| Voltage protection level Up(8/20µs) | 85V | 85V | 85V |
| Voltage protection level Up(1kV/μs) | 600V | 600V | 600V |
| Bandwidth(-0.5dB) | 10MHz | 10MHz | 10MHz |
| Response time | 1ns | 1ns | 1ns |
| Housing protection grade(IEC60529) | IP 65 | IP 65 | IP 65 |
| Housing material | 304 stainless steel | 304 stainless steel | 304 stainless steel |
| Thread standard | specified in orders | specified in orders | specified in orders |
| Testing standard | IEC 61643-21 | IEC 61643-21 | IEC 61643-21 |
| Intrinsic safety certification | Ex ia II C T4~T6 Ga | Ex ia II C T4~T6 Ga | Ex ia II C T4~T6 Ga |
| Flame-proof safety certification | Ex d II C T4~T6 Gb | Ex d II C T4~T6 Gb | Ex d II C T4~T6 Gb |
| Functional safety certification | SIL3 | SIL3 | SIL3 |
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