3KF4340-4LF11
Product ID:116652
Updated: 2026/4/3

Key Features
- 1Handle up to 400A current for reliable power distribution. 2、Utilize a compact design ideal for space-limited electrical panels. 3、Mount versatilely on floor, rail, or busbar systems. 4、Enhance safety with permanent on/off capability under load. 5、Meet UL 508 and UL 489 standards for certified performance.
Technical Specifications
Detailed engineering parameters
| Parameter | Value | Parameter | Value |
|---|---|---|---|
| DC Insulation Voltage (V): | 220VDC/440VDC | AC Rated Voltage (V): | 690 |
| Insulation Voltage (V): | 1000 | Description | 3KF LV HRC (General Fuse), Rated Current 400A, Basic Unit — Side Operation Mechanism, No Handle, Operation Mechanism Module Located on the Left Side of the Switch, Surface Mounting |
| Mounting Type: | Surface Mounting | Fuse Specification: | Size: 1/2 |
| Terminal Type: | Flat Terminal | Poles: | 3P |
| In(A): | 400 | Specification: | 3KF4_400 |
| Switch Type: | Basic Unit, Side Operation Mechanism, No Handle, Operation Mechanism Module Located on the Left Side of the Switch | Lifecycle | Delivery Release (PM300) |
| Country of Origin | China | ECCN | N |
| AL | N | Model Number | 3KF4340-4LF11 |
Specifications may be subject to change without notice
