Sprecher & Schuh KTA9-32S-1.6A motor protection circuit breaker

Sprecher + Schuh KTA9-32S-1.6A Manual Motor Protector

The Sprecher + Schuh KTA9-32S-1.6A is a high-performance, 3-pole manual motor starter and protector. It is specifically designed to manage and protect 3-phase motors in industrial applications. This unit offers a precise adjustable thermal trip range and integrated safety features to ensure your equipment is protected from electrical faults and overheating.

As the manufacturer-authorized replacement for the KTA7-25S, this unit is electrically identical and maintains the standard 45mm width, allowing it to drop into existing control panels without the need for extensive rewiring or layout changes.

Key Features

• Adjustable Protection: Features a calibrated dial to adjust the trip current between 1.0 and 1.6 Amps, allowing for fine-tuning based on your motor’s specific Nameplate Full Load Amps (FLA).

• Class 10 Tripping: Engineered with a Class 10 trip characteristic, ensuring the circuit is interrupted within 10 seconds or less during an overcurrent event.

• Phase Loss Sensitivity: Provides critical protection against “single-phasing” by detecting the loss of a phase, preventing catastrophic motor winding failure.

• Standardized Form Factor: The compact 45mm width is an industry standard, making it compatible with most DIN rail mounting systems and modular control assemblies.

• Versatile Use: Functions as both a manual disconnect and a motor protector, reducing the need for separate fuses and overload relays.

Technical Specifications

Installation Tip

When replacing an older KTA7 series unit, ensure that your wire ferrules and terminal connections are clean. The KTA9 series features improved box terminals designed for high-vibration environments, but a solid, torqued connection is essential for preventing localized heating at the terminal.

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