General Overview
The document describes single-pole indoor disconnectors designed for railway supply systems. These disconnectors are categorized under category I according to EN 50123-3 and operating class VII as per EN 50329, suitable for installation in indoor switchgears. They are manually operated with an actuating rod, and the 2000 A models can be equipped with a motor actuator.

Design and Construction
The disconnectors are designed for vertical mounting with rotary contact downwards. All live parts are made of E-Cu and hot-galvanized for enhanced corrosion resistance. Stainless pressure springs ensure sufficient contact pressure throughout the operating life. Each disconnector includes an earthing clamp.

Available Designs
For 1250 A disconnectors:

• I - Flat, straight terminal pad
• T - Flat, T-shaped terminal pad

Optional position switches are available for indicating switch positions.
For 2000 A disconnectors:

• R - Manual operation
• M - Motor actuator

Motor actuators are available for various DC and AC voltages and include a position switch.

Operating Conditions
The disconnectors are suitable for normal operating conditions as per EN 60721 and EN 50123-1, usable up to 1400 m above sea level. For installations above this height, the rated isolating level must be adjusted. Temperature limits are -25°C to +40°C, with a maximum average of +35°C over 24 hours.

Technical Specifications

• Nominal Voltage: 1.5 kV DC
• Rated Current: 1250 A and 2000 A
• Rated Insulation Level: 3 kV
• Impulse Withstand Voltage: 15 kV (Phase to Earth), 18 kV (Open Gap)
• Power-frequency Withstand Voltage: 6.9 kV (Phase to Earth), 8.3 kV (Open Gap)
• Short Time Current: 40 kA for 1250 A, 80 kA for 2000 A

Product Variants and Order Information
Various models are available with specific order numbers for different configurations, including manual and motor-operated designs with auxiliary switches.

Additional Information
Dimensions, weights, diagrams, and descriptions are non-binding and subject to change without notice. The document emphasizes environmentally friendly printing practices.