Reliable and durable safety switch for professional use. The lever-operated Katko KSM-series switch provides safe, dependable electrical isolation in demanding indoor and outdoor installations.
The compact, impact-resistant polycarbonate enclosure protects against moisture, dust and chemical exposure. It is an excellent maintenance isolator for air source heat pumps and other electrical equipment.
A key advantage is improved long-term durability outdoors. Hard-plastic cable-entry knockouts are located at the top, while the membrane seals at the bottom are naturally protected from direct solar UV radiation.
Conventional top-mounted membrane seals can become brittle under UV exposure and eventually allow water into the enclosure. This design substantially reduces that risk.
Key benefits
- 3-pole safety switch (3 × 16 A / 400 V / 7.5 kW)
- IP67 enclosure for demanding conditions
- Side-operated lever construction
- Lockable in the OFF position for safe maintenance
- Sealable in the ON position; the cover can also be sealed
- Self-extinguishing material and excellent insulation
- Good chemical and UV resistance
- Improved outdoor durability with hard upper knockouts and protected lower membrane seals
Installation and construction
- Durable polycarbonate enclosure
- Hard-plastic cable-entry knockouts at the top (M20)
- Membrane seals at the bottom, protected from UV radiation
- Strain reliefs included
- Screw terminals for conductors of approximately 1.5–16 mm²
Technical specifications
- Rated current: 16 A
- Rated voltage: 400–415 V AC
- Power (AC-23, 400 V): 7.5 kW
- Number of poles: 3
- Enclosure rating: IP67
- Short-circuit withstand: 25 kA
Applications
- Air source heat pumps and refrigeration equipment
- Maintenance and safety isolation for electrical equipment
- Industrial and property installations
- Demanding outdoor installations
