PRODUCT SPECIFICATION General Purpose Relays

21 Series General Purpose Relays

21 Series General Purpose Relays General Purpose Relays WERNER`s 21 Series General Purpose & Power Relays represent the most complete line of state-of-the-art high performance electrical switches, designed and manufactured to highest international industry standards. Mechanical lifetimes of up to 10 Million operations and electrical durability of up to 250.000 switching cycles under full load make WERNER Relays your best choice of all. Features Overview All models designed applying MFMS design principles (Max Function Min Space) All models designed applying solid modeling and finite elements...

21 Series General Purpose RelaysGeneral Purpose Relays A Features: Switching Power of 5 A No Cadmium Blade & PC Board mounting Built-in LED DPDT, 3PDT & 4PDT Compact & small in size Over voltage category III, as per EN IEC 60947-5-1 Approvals Approbations and Declaration of conformity Released Voltage

21 Series General Purpose RelaysContact Ratings Model Measured at 20° C Operating temperature

21 Series General Purpose Relays r Model Number Structure - General Purpose Relays Series 21 Series General Purpose Relays

21 Series General Purpose Relays Model Number Selection Appearance Terminal Type

21 Series General Purpose RelaysModel Number Selection Model No.

Terminal Type

21 Series General Purpose RelaysModel Number Selection Model No.

21 Series General Purpose Relays UL - Voltage Ratings

Mounting Clips Applicable Clips * For suitable relay please check Sockets catalogue Switching Capacity

21 Series General Purpose Relays Electrical Characteristics 21.12 & 21.22 (DPDT)

21 Series General Purpose Relays Dimensions PC Board Terminal Blade Terminal

21 Series General Purpose Relays Basic Type - Internal Connection (Bottom View) LED Type - Internal Connection (Bottom View) * Measured below 24V AC/DC 12

Apply rated voltage to the relay coil to ensure correct relay type. When using a power supply containing a ripple voltage, suppress the ripple factor within 6% however, a complete DC voltage is best for the coil power to make sure of stable relay operation. Pickup voltage and dropout voltage depend on the ripple factor when power is supplied through a rectification circuit. Include a smoothing capacitor for better operation. vr-T^i i t Emin Emax Emean DC Emean Emax = Maximum of pulsating current Emin = Minimum of pulsating current Emean= DC mean value Special consideration should be taken when...

21 Series General Purpose Relays Safety Precautions Do not drop, shock or remove the relay cover to maintain the initial characteristics. The relay cover cannot be removed from the base during normal operation. Use the relay in environments free from dust, condensation, dioxide or hydrogen sulfide. Make sure that the coil voltage does not exceed applicable coil voltage range. Prevent usage of relays in the vicinity of strong magnetic field, as that my cause in malfunctioning of relays. Failure to turn off power before wiring, installation, removal and maintenance may cause electrical shock or...

21 Series General Purpose Relays Terms And Conditions Please read this catalog before purchasing any products. Please consult your WERNER representative for any clarifications or comments. Application Considerations WERNER shall not be responsible for conformity with any regulations, codes or standards that apply to use of the products. WERNER shall provide applicable third party certification documents identifying ratings and limitations of use that apply to the products in case of the customer's request. Prevent use the products for an application involving risk to life or property. Be sure...

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