ABB OT45E3 3-pole disconnect switch

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1. Product Overview

The ABB OT45E3 3‑Pole Disconnect Switch is a manual three‑pole disconnect/isolation switch designed for low‑voltage AC distribution systems. It provides a reliable means to manually disconnect three‑phase power for maintenance, safety isolation, or control purposes. This non‑fusible switch is compact, easy to install, and suitable for panel and control cabinet environments.

2. Technical Specifications

• Model: OT45E3

• Product Type: 3‑Pole Disconnect / Isolation Switch

• Number of Poles: 3

• Rated Operational Voltage: Up to 600 V AC (alternating current)

• Rated Current: 60 A (with thermal capability around 63 A)

• Frequency: 50 / 60 Hz

• Power Rating: Approx. 22 kW (AC‑23A, 415 V)

• Protection Class: IP20

• Mounting Method: Base or DIN rail mount

• Standards Compliance: IEC 60947‑3

• Dimensions: Approx. 91 × 53 × 72 mm (L×W×D)

• Weight: Approx. 0.24 kg

3. Key Advantages & Features

• Compact and Space‑Saving – Ideal for dense panel installations.

• Full Three‑Pole Isolation – Disconnects all three phases simultaneously for enhanced safety.

• Wide Standard Compliance – Designed to meet IEC 60947‑3 industry standards.

• Easy Manual Operation – Simple rotary or lever switch action for quick disconnect.

• Reliable Performance – Suitable for general industrial and control applications.

4. Typical Applications

The OT45E3 is commonly used in:

• Main power isolation in low‑voltage distribution panels

• Safety isolation for machinery and equipment

• Motor control centers

• Panel and enclosure branch circuit isolation

• Industrial automation power cutoff

5. Installation & Usage Notes

• Match Electrical Ratings – Ensure supply voltage and current demands match the switch’s ratings.

• Safe Disconnect Practice – Confirm zero load conditions before switching to avoid arcing.

• Proper Mounting – Secure installation on base or DIN rail per instructions.

• Periodic Inspection – Check contacts and insulation for wear and replace if needed.

• No Heavy Break Operation – Avoid switching under heavy load frequently; use as a safety isolation device.