Optional Extras
Kraus & Naimer-Optional Extras
We offer a large variety of optional extras as e.g. key-operators, padlockable handles, auxiliary contacts or enclosures. This allows us to meet the requirement of the world market.
One or more optional extras may be used in combination with any one switch provided they are of the same switch size. In some cases, for technical strength or esthetic reason, it may be desirable that a switch be combined with an optional feature of the next larger switch size.
Padlock devices:
These additional devices are used to lock the handle in the 'OFF' position using one or more padlocks.
Auxiliary contacts:
Auxiliary contacts can be used as normally open (NO) or normally closed (NC) contacts.
Door clutches and padlock devices with integrated door clutch:
Door clutches are used to disconnect the handle or the padlock device from the switch when they are installed as base mounting or fitted in a large enclosure.
Key-lock devices:
Key-lock devices are available for several locking programs. For master key locking systems please contact your local Kraus & Naimer sales office.
Shaft extensions:
Shaft extensions are used for switches with base mounting to compensate different mounting heights.
Protective covers:
The protective cover prevents accidental contact with current-carrying terminals.
Push-pull interlock:
Used to interlock the switch so that the handle can be rotated only when pushed or pulled. Auxiliary contacts can be operated by means of the axial movement of the handle.
Electro-mechanical interlock:
The electro-mechanical interlock locks the switch in any switching position. The interlock device is operated by energizing or de-energizing the electro-mechanical system. Adding auxiliary contacts to the switch permits the device to be operated in pre-determined positions.
Electro-mechanical trip device (Undervoltage release):
The device consists of a magnetic system which releases the switch to the trip position at voltage failure or undervoltage (70% nominal voltage) and thus prevents the machine from restarting automatically.
Enclosures
Aluminium enclosures
This robust aluminum enclosure in anthracite (RAL 7016) stands out for its stability and simple design, enabling seamless integration into various environments. Specifically pre-drilled for Kraus & Naimer key switches, installation is quick and straightforward. Additionally, the enclosure is provided with an M16 thread, simplifying cable entry.
Stainless steel enclosures
With the switch and distribution-board enclosures made of brushed stainless steel AISI 304 and protection class IP 66, Kraus & Naimer expands its portfolio for applications in particularly harsh environments. The enclosures are ideal for use in industries where technical components are exposed to extremely harsh conditions such as dust, varnishes and solvents. The compact design and protection class IP66 are what makes these stainless steel enclosures particularly suitable for an easy installation in tight spaces and under adverse environmental influences.
Isolating Enclosures
Isolating enclosures are available either as a highly UV-resistant design as well as for applications in an aggressive environment, such as oil, chemical substances, and grease. All variants are offered with cover coupling with or without cover interlock, strong durable plastic and increased wiring space.