# Siemens SENTRON 3NP1143-1DA30

> fuse-switch-disconnector - Three-pole NH1 fuse switch-disconnector for low-voltage distribution, with 250 A continuous current at 35 °C and 690 V AC insulation rating.

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## Overview

- **Brand:** Siemens
- **Product family:** SENTRON 3NP1
- **Application:** Three-pole NH1 fuse switch-disconnector for low-voltage distribution, with 250 A continuous current at 35 °C and 690 V AC insulation rating.
- **Product type:** fuse-switch-disconnector

## Technical Specifications

| Property | Value |
|---|---|
| Rated voltage | up to 0.69 kV AC |
| Rated current | 250 A at 35 °C |
| Short-circuit withstand | not stated as IEC short-time withstand; fuse-coordination I²t data must not be substituted for Icw |
| Insulation medium | Air-insulated NH fuse switch-disconnector |
| Standards | IEC 60947-3 |

## Sources

- https://mall.industry.siemens.com/goos/catalog/Pages/mmpdata.ashx?MLFB1=3NP1143-1DA30&lang=en

- **Source scope:** manufacturer-family
- **Last reviewed:** 2026-09-13

Manufacturer portfolio/family source. Confirm the exact order code, guaranteed ratings and project-specific options against the current OEM datasheet before procurement or an SLD study.

Technical ratings are configuration-dependent where stated by the manufacturer. Request project-specific verification before procurement.