Konrak LW30 Isolator Switch
The LW30 range of emergency-off switches and switch disconnectors is designed for the safe isolation of machine tools, distribution panels and switchboards. Available from 25 A to 100 A in 3- and 4-pole versions, with rear-panel, base (DIN-rail) or enclosure mounting and a choice of handles.
One switch, several mounting styles
Choose rear-panel, base (DIN-rail) or enclosure mounting, in 3-pole or 4-pole versions. A door-interlock mounting option is also available.
Base (DIN-rail) · 3-pole
Clips onto a 35 mm DIN rail (EN 50022) — the standard base-mounting version.
Panel (rear) · 3-pole
Rear-panel mounting through the panel, operated by a knob handle.
Base (DIN-rail) · 4-pole
4-pole base version for three-phase + neutral or four-wire circuits.
Panel (rear) · 4-pole
4-pole rear-panel version with knob handle and door-interlock option.
Enclosure mounting (E) is also available across the range. Dimensional drawings for each version are available on request.
25 A to 100 A
Six ratings cover the most common industrial isolation duties.
LW30 technical data
| Standards | IEC 60947-3 · EN 60947-3 · GB 14048.3 |
| Function | OFF-ON switch disconnector |
| Rated thermal current (Ith) | 25 · 32 · 40 · 63 · 80 · 100 A |
| Rated working voltage (Ue) | 240 V · 440 V |
| Poles | 3P · 4P |
| Mounting | R = rear panel · B = base (DIN rail) · E = enclosure |
| Actuator | Knob — types 1 / 2 / 3 (padlock or normal knob) |
| Utilisation categories | AC-21A · AC-22A · AC-23A · AC-3 |
| Marking | CE |
| Model | AC-23A 240 V | AC-23A 440 V | AC-3 240 V | AC-3 440 V |
|---|---|---|---|---|
| LW30-25 | 15 / 4 | 14 / 7.5 | 11.7 / 3 | 11.7 / 5.5 |
| LW30-32 | 22 / 5.5 | 22 / 11 | 15 / 4 | 15 / 7.5 |
| LW30-40 | 30 / 7.5 | 30 / 15 | 15 / 4 | 15 / 7.5 |
| LW30-63 | 43 / 11 | 43 / 22 | 36 / 11 | 36 / 18.5 |
| LW30-80 | 57 / 18.5 | 57 / 30 | 43 / 15 | 43 / 22 |
| LW30-100 | 70 / 22 | 70 / 37 | 57 / 18.5 | 57 / 30 |
AC-21A and AC-22A = rated thermal current (Ith). Values are A / kW (current / rated power).
Build your LW30 model code
Configure the switch by current rating, function, poles, mounting and actuator.
Codes shown are a guide based on the Konrak LW30 range. Please confirm the exact code with Konrak sales before ordering.
Safe, compact isolation
Switch disconnector OFF-ON
A load-break isolator for the safe isolation of circuits during maintenance.
Three mounting styles
Rear-panel (R), base / DIN-rail (B) and enclosure (E) versions.
3-pole and 4-pole
3P and 4P versions for three-phase and three-phase + neutral circuits.
Choice of handles
Knob actuators in several types — padlockable or normal — plus a door-interlock option.
Utilisation categories
Rated AC-21A, AC-22A, AC-23A and AC-3 up to 100 A.
Lockable for safety
Padlockable knob versions support lock-out / tag-out during maintenance.
Compact & modular
Small footprint for machine tools, distribution panels and switchboards.
Standards compliant
Designed to IEC/EN 60947-3 and GB 14048.3, CE marked.
Where the LW30 is used
Typical installations where the LW30 switch disconnector provides safe, lockable isolation of the supply.
Machine tools
Local isolation of machine-tool power supplies.
Distribution panels
Main isolation for distribution boards and switchboards.
Motor circuits
Load-break isolation of motor and control circuits.
General machinery
Safe isolation for any industrial machinery.
Frequently asked questions
What is the LW30 used for?
It is a switch disconnector (isolator) used to safely isolate circuits — typically machine tools, distribution panels and switchboards — for maintenance and lock-out.
Which current ratings are available?
25 A, 32 A, 40 A, 63 A, 80 A and 100 A (rated thermal current Ith).
Which mounting options are there?
Rear-panel (R), base / DIN-rail (B) and enclosure (E), plus a door-interlock mounting option.
Are 3-pole and 4-pole versions available?
Yes — both 3-pole (3P) and 4-pole (4P) versions are available across the range.
What handles are available?
Knob actuators in several types, in padlockable or normal versions; a door-interlock version is also available.
What are the utilisation categories?
AC-21A and AC-22A (= Ith), AC-23A and AC-3 up to 100 A; see the utilisation table for A / kW at 240 V and 440 V.
What standards does it meet?
IEC 60947-3, EN 60947-3 and GB 14048.3; the range is CE marked.
Need the right LW30 for your panel?
Tell us the current rating, number of poles and mounting style you need — our team will confirm the exact configuration and can supply samples or OEM versions.
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