The Siemens 3KL8321-5UA10 is a 3-pole switch disconnector fuse unit (SDF) from the Superswitch 3KL8 series, supplied in a stainless steel (SS) enclosure with factory-fitted configuration. It is designed for safe switching, isolation, and short-circuit protection using HRC fuses in industrial power distribution systems.
This model is widely used in MCC, PCC, and heavy-duty electrical panels where a ready-to-install enclosed fuse switch unit is required.
• Siemens Superswitch 3KL8 series
• Model: 3KL8321-5UA10
• Type: Switch Disconnector Fuse in SS Enclosure (Factory Fitted)
• 3-Pole (3P) configuration
• Rated current class: 250A
• Rated voltage: up to 690V AC
• Suitable for HRC fuse protection (gG / aM type)
• Factory assembled SS enclosure for plug-and-play installation
• High short-circuit protection (with correct fuse selection)
• Manual ON/OFF switching with isolation function
• Strong corrosion-resistant stainless steel enclosure
• Clear ON/OFF indication
• High mechanical durability
• Safe maintenance isolation
• Designed for industrial heavy load applications
| Parameter | Specification |
|---|---|
| Product Series | Siemens Superswitch 3KL8 |
| Model Number | 3KL8321-5UA10 |
| Product Type | Switch Disconnector Fuse (SS Enclosure) |
| Rated Current | 250A |
| Poles | 3 Pole |
| Rated Voltage | 690V AC |
| Fuse Type | HRC Fuse (gG / aM) |
| Enclosure Type | Stainless Steel (Factory fitted) |
| Standard | IEC 60947-3 |
| Application | Industrial power distribution |
| Mounting | Panel / wall mounted SS enclosure |
| Brand | Siemens |
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