Overview
The ABB OT16E3 is a robust non-fused disconnect switch engineered for safe and reliable isolation of electrical circuits in industrial control systems. Rated at 16 amperes and 600VAC, this 3-pole switch combines proven disconnect switch technology with UL508 and IEC certifications to meet demanding industrial standards. The OT16E3 is ideal for maintenance personnel and system integrators requiring a dependable load-break switch for motor control, power distribution, and equipment isolation.
Key Features
- 16A continuous duty rating — Handles up to 16 amperes for general-purpose industrial applications
- 600VAC maximum voltage — Suitable for single-phase and three-phase circuits up to 600 volts AC
- Non-fused design — Direct disconnect without integral fusing; compatible with external fuse protection when required
- 3-pole configuration — Provides simultaneous disconnection of all three phases in a single operation
- UL508 and IEC certified — Meets North American (UL) and international (IEC) safety and performance standards
- Load-break capability — Can safely interrupt normal operating currents without arc damage or contact degradation
Technical Specifications
- Rated Current (General Purpose): 16A at 40°C
- Maximum Operating Voltage: 600VAC
- Number of Poles: 3-pole
- Design Type: Non-fused load-break switch
- Certifications: UL508, IEC 947-3, CSA approved
- Mechanical Endurance: Up to 6,000 operations
- IP Rating: IP20
- Horsepower Rating (3-phase 480V): 10 HP (14A FLA)
- Horsepower Rating (3-phase 600V): 10 HP (11A FLA)
- Wire Range: #6 – 300 kcmil
- Mounting Type: Panel or base-mount compatible
Typical Applications
The OT16E3 disconnect switch serves critical roles in industrial electrical systems:
- Motor disconnect: Primary or branch circuit isolation for small to medium three-phase motors
- Equipment maintenance: Safe power interruption during installation, troubleshooting, and maintenance procedures
- Control panel enclosures: Panel-mounted disconnect for compact switchgear and control cabinets
- Machinery circuits: Load-break isolation in production equipment and automated systems
- Power distribution: Feeder and branch circuit switching in industrial facilities
Compatibility & Replacements
The ABB OT16E3 is part of ABB’s OT series switch-disconnector family, which includes 2-pole, 3-pole, and 4-pole configurations from 16A to 160A ratings. Related models include OT25E3, OT32E3, and OT45E3 for higher current requirements. When specifying a replacement or upgrade, verify the amperage, pole count, voltage rating, and fusing requirements with your control system documentation. The OT16E3 uses standard #6 to 300 kcmil lug terminals and accepts ABB auxiliary contact modules (OZXK series) for expanded control functionality. This unit is compatible with standard shaft and handle assemblies for operator convenience.
