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EPS1 Series

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# EPS1 Series

SPD SERIES Surge Protective Device

EPS1 Series Surge Protective Device

| Standard | IEC 61643-11 |
| --- | --- |
| Protection | Protect electric system and on-loading electrical apparatus from thunder and instanteous over-voltage |
| Ambient temperature(°C) | -40℃~+70℃ |
| Number of poles | 2P,4P |
| Maximum continuous Operating voltage Uc(V~) | 275/320/385 |
| Nominal discharge current In (kA) | 20 |
| Maximum discharge current lmax (kA) | 40 |
| Protection level Up(kV) | 1.5/1.7/1.8 |
| Response time t(ns) | 25 |
| On-Off indicating window | Green: normalfunction Red: functionless,immediate replacement required |
| Type of terminal | Pin type |
| Installation | Mounting on 35mm DIN rail |
| Ground system | TN-S/TN-C,TT |
| EPS1/2 EPS1/4 |  |

EPS1 Series Surge Protective Device

|  | Type | Poles | Uc(V~ | Discharge current |  | Up (kV) | Applicable grounding system |
| --- | --- | --- | --- | --- | --- | --- | --- |
|  |  |  |  | Nominal (kA) | Max. (kA) |  |  |
| EPS1-C/2 | EPS1-C/2-275-40 | 2 | 275 | 20 | 40 | <1.5 | TT/TN |
|  | EPS1-C/2-320-40 |  | 320 | 20 | 40 | <1.7 |  |
|  | EPS1-C/2-385-40 |  | 385 | 20 | 40 | <1.8 |  |
| EPS1-C/4 | EPS1-C/4-275-40 | 4 | 275 | 20 | 40 | <1.5 |  |
|  | EPS1-C/4-320-40 |  | 320 | 20 | 40 | <1.7 |  |
|  | EPS1-C/4-385-40 |  | 385 | 20 | 40 | <1.8 |  |

EPS1 Series Surge Protective Device Mechnical characteristics

Overall and mounting dimensions 18 36

83 83

Working Principle Diagram

| Type Mechnical characteristics | 2P | 4P |
| --- | --- | --- |
| Connection | By screw terminals : 6-25 mm2 |  |
| Terminal Screw Torque | 2.0 Nm |  |
| Recommended Cable cross Section | ≥6mm² | ≥10mm² |
| Degree of Protection | IP20 |  |
| Housing | PA |  |
| Flame retardant grade | UL94 V0 | 4.8VA |
| Operating temperature | -40℃~70℃ |  |