SCHNEIDER ELECTRIC Acti9 STI 15645

Schneider Electric Fuse Disconnector 20A 1P+N Acti9 STI 15645

Description

The Schneider Electric Acti9 STI, part number 15645, is a high-quality fuse disconnector designed for reliable circuit protection in industrial and commercial applications. This single-pole plus neutral (1P+N) device mounts easily on a standard DIN rail. It is rated for a nominal current of 20A at 400V AC and accommodates 8.5 x 31.5 mm cylindrical fuses. The ergonomic handle allows for safe and clear disconnection of circuits for maintenance or in case of a fault. Order now from spareparts2day for expert support and fast delivery.

Specifications

• Manufacturer: Schneider Electric
• Product Range: Acti9 STI
• Part Number: 15645
• Poles: 1P+N
• Rated Current (Ie): 20A
• Rated Voltage (Ue): 400V AC 50Hz
• Fuse Size: 8.5 x 31.5 mm
• Mounting Type: DIN Rail
• Utilization Category: AC-20B conforming to IEC 60947-3
• IP Rating: IP3XB

Label Info

• gG fuse max: 20A (3W max dissipation)
• aM fuse max: 10A

Application

This fuse disconnector is ideal for protecting control circuits, lighting circuits, and small motors against overcurrents and short circuits. It is commonly used in distribution boards, control panels, and machinery electrical systems.

Country of Origin

This product is proudly Made in Belgium.

CO2 Impact

By purchasing this pre-owned item, you are contributing to a circular economy and helping to avoid 2.6 kg of CO2 emissions associated with the production of a new one.

Availability

This item is in stock and ready for immediate dispatch.

FAQ

Question?

What type of fuses can be used with this Schneider 15645 disconnector?

Answer:

This device is designed for cylindrical fuses of size 8.5 x 31.5 mm. It supports both gG type fuses up to 20A and aM (motor protection) type fuses up to 10A.

Question?

Is this a single-phase or three-phase device?

Answer:

This is a single-phase device, indicated by the ‘1P+N’ designation, meaning it disconnects one phase (pole) and the neutral line simultaneously.

Question?

What is the breaking capacity of this fuse disconnector?

Answer:

The breaking capacity is determined by the installed fuse. The holder itself is rated according to IEC 60947-3 standards for safe operation under load, but the actual short-circuit interruption capability (e.g., 20kA) depends on the specific 8.5×31.5mm fuse you choose.

Last Update: Friday, March 13, 2026

spareparts2day is not an authorized distributor, reseller or representative of the products featured on this website. All product names, trademarks, brands and logos used on this site are the property of their respective owners.