Micro switch
S847 series micro switches up to IP67. Like the S826, this microswitch can be used in many different ways. Thanks to its robust structure, the S847 can also connect higher power ranges. The mechanical positive opening ensures that the break contacts work, even if they melt during a short circuit. The two contact bridges on the S847 are galvanically isolated. At each switching, the contacts are self-cleaning and ensure a high level of contact reliability. The S847 is therefore also used at low voltages and currents. For use in aggressive environments with low switching frequencies, we recommend gold contacts.
S947 identical design as S847 but has a polyetherimide (PEI) housing. The dimensions, switch mechanism and electrical characteristics of both switches are identical. Compared to the polycarbonate in S847, PEI is significantly more resistant to extreme temperatures, aggressive chemicals and impacts. This micro switch is therefore recommended for safety applications in very harsh conditions.
Watch this video explaining it
NO = Normally Open, NC = Normally Closed. This describes the state of a contactor when the voltage in the system is off. Normally open (NO) is mostly used in electrical systems where, for safety reasons, you want to be sure that the contactor opens when the power is cut in the system in case of a power failure. Normally Closed (NC) is often used when you want to be sure that the contactor closes a circuit in the event of a voltage drop, such as a power failure. to drain the system of energy to earth.
Read more about our DC contactors for both high and low voltage here.
SPST stands for “single-pole single-throw” and SPDT stands for “single-pole double-throw.” These abbreviations are often used for electrical switches, relays and microswitches.
Relays are classified by number of poles and number of throws. The “poles” of a micro switch, for example, are the terminals common to each path the current can take. Any position where a ‘pole’ can be connected is called a ‘throw’. The relays are also set as NO or NC. Read more here about what NO and NC means.
SPST is the most common form and has a ‘pole’ and a ‘throw’. Like a regular light switch at home. It is illustrated as follows:
The SPDT has a double throw and is illustrated as follows:
SPDT is good as a feedback signal as you can get both normal mode and mirrored mode from e.g.. a high voltage contactor. This always shows if the circuit is complete and the position of the main contactor when one pole is NO and the other NC. Both cannot be activated at the same time but follow the “break before make” concept.
Read more about our microswitches here.
Schaltbau’s micro switch:
Micro switch
Micro switch
Micro switch
Micro switch
Micro switch
Micro switch
Micro switch
Micro switch
Microswitches for safety-related applications from technology leader Schaltbau.
Microswitches are available with double-break contacts and positive opening, ensuring safe opening of the NC contacts even if a weld occurs during a short circuit or overcurrent. Breaks up to 16A, mechanical life up to 10M cycles, IP67 solutions, shock and vibration resistant, self-cleaning. Example of temperature range -55°C to +150°C.