SCHNEIDER ELECTRIC STI 15645

Schneider Electric Acti9 STI 16A Fuse Switch Disconnector

Description

The Schneider Electric STI 15645 is a high-quality fuse switch disconnector from the renowned Acti9 series. It is designed to provide reliable circuit protection and safe disconnection for industrial and commercial electrical installations. This 1P+N unit is rated for 16A and accommodates 10.3 x 38 mm fuses, ensuring compliance and safety in a compact, DIN-rail mountable form factor.

Specifications

• Manufacturer: Schneider Electric
• Part Number: 15645
• Series: Acti9 STI
• Product Type: Fuse Switch Disconnector
• Poles: 1 Pole + Neutral (1P+N)
• Rated Current (In): 16 A
• Rated Operational Voltage (Ue): 400 V AC
• Fuse Size: 10.3 x 38 mm
• Mounting: DIN Rail

Label Info

• Model: STI 16A D16
• Ith: 20A
• Ui: 690V
• Standard: IEC 947.3

Application

This component is ideal for use in distribution boards for the protection of circuits against overloads and short circuits. It is suitable for applications in building management, industrial automation, and energy infrastructure where reliable circuit isolation is critical for maintenance and safety.

Country of Origin

Made in Belgium.

CO2 Impact

Opting for a reconditioned component like this one prevents the emission of approximately 6.0 kg of CO2, which is equivalent to the savings from driving a car for 30 kilometers. Your choice supports a more sustainable industrial environment.

Availability

This item is in stock and ready for immediate dispatch. Order now from spareparts2day for expert support and fast delivery.

FAQ

What type and size of fuse is compatible with the Schneider STI 15645?

This unit is specifically designed for cylindrical fuses of size 10.3 x 38 mm. It can be used with gG or aM type fuses up to its rated current of 16A.

Is this a circuit breaker or a fuse disconnector?

This is a fuse switch disconnector. Unlike an automatic circuit breaker (MCB), it does not trip automatically. It provides a means to manually disconnect a circuit and holds a fuse that will blow to protect the circuit against overcurrents.

Can the STI 15645 be used in single-phase residential applications?

Yes, as a 1P+N device, it is perfectly suited for single-phase applications, providing protection and switching for both the phase and neutral lines, which is common in residential and light commercial settings.

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Last Update: Friday, March 13, 2026