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Protectors for Rail Applications Specification |
| ESP SSI/M | |
| Maximum signal voltage' | 7V |
| Maximum common mode stand-off voltage | 90Vrms |
| Current rating | 100mA |
| In-line resistance | 4.5ohms |
| Leakage (Line to line impedance) (Line to earth impedance) |
1ohm |
| Differential Bandwidth (50ohm system) | 10MHz |
| ESP SSI/B |
| This is a modified 11 pin `relay type' socket containing a 10052 ±5% wire-wound 2.5W resistor connected between terminals 8 and 9. Internal links between terminals 2 & 3, 9 & 10, and 1 & 11. |
| ESP SSI/120AC | ESP SSI/140AC | |
| Nominal voltage (RMS) | 120V | 140V |
| Working voltage (RMS) | 90-150V | 90-165V |
| Frequency range | 40-60Hz | 40-60Hz |
| Current rating (supply) | Direct connection to supplies up to 100A. Connection via series fuses to supplies greater than 100A. See installation instructions. |
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| Leakage current (to earth) | <60µA | <60µA |
| Indicator circuit current | <10mA | <10mA |
| Volt free Contact* - Current Rating - Nominal Voltage (RMS |
Screw Terminal 200mA 250V |
Screw Terminal 200mA 250V |
Transient Specification
| ESP SSI/M | |
| Transverse (Differential) `let-through' voltage' | 15V |
| Common mode `let-through' voltage' | 250V |
| ESP SSI/120AC | ESP SSI/140AC | |
| Let-through voltage (all conductors)' Let-through voltage (all conductors)' 6kV 1.2/50µs open circuit voltage, 3kA 8/20µs short circuit current to: BS 6651:1999 Appendix C, Cats C-Low & B-High IEEE C62.41-20022 Location Cats C1 & B3 AS 1768-1991 Appendix B, Cat B UL1449 mains wire-in |
400V | 500V |
Maximum surge current³ |
Mechanical Specification
| ESP SSI/M | ESP SSI/B | |
| Temperature Range | -25 to +70°C | -25 to+70°C |
| Connection Type | - | Screw Terminal |
| Fixing Connection - Flat Mount - Top Hat Din Rail Mount - G Din Rail Mount |
- | - Two M4 Fixing holes with 35mm centres |
| Max Load | - | 10A, 250V |
| Weight -unit -packaged per 50 |
0.065kg 3.25kg |
0.075kg 3.9kg |
| dimensions image |  |
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| ESP SSI/120AC | ESP SSI/140AC | |
| Temperature range | -40 to +70°C | -40 to +70°C |
| Connection type | Screw terminal | Screw terminal |
| Conductor size | 16mm' | 16mm' |
| Earth connection | Screw terminal | Screw terminal |
| Volt free contact | Connect via screw terminal with conductor up to 2.5mm' (stranded) | |
| weight - unit - packaged |
0.5kg 0.6kg |
0.5kg 0.6kg |
| Dimensions image |  |
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