80 Ampere Miniature Direct Current Contactors P C 6 0 , M B 6 0 & S W 6 0 S W 6 0 A P C 6 0 A 80 Ampere Miniature Direct Current Contactors PC60 The Use of Miniature DC Contactors The "PC", "MB" & "SW" contactors represent a novel dual approach to the requirements for DC contactors. On the one hand the expansion of Telecommunications Systems, UPS and other Power Conversion Systems has led to a demand for compact, easily installed and economically priced contactors which up until now have not been available. With the introduction of the "PC60" & "MB60" contactors, this demand has now been effectively met. On the other hand the "SW60" range fulfills the requirements for more traditional DC contactor applications: switching or reversing small traction motors, hydraulic power packs, small electric winch motors, etc. All the contactors are manufactured to a very high standard and employ best quality materials: phenolic contact housings, silver alloy contacts and Class H (180C) winding wire for the coils. Silver plated heavy current and gold plated light current components are also used on the "PC60" & "MB60" contactors. These new contactors are a unique and innovative introduction from the world's leading manufacturer of DC contactors. 2 The "PC60", "MB60" & "SW60" are a new family of miniature direct current contactors and solenoid switches which are designed to fill the gap between 30 ampere relays and 100 ampere contactors. The family is divided into two distinct branches, PC60/MB60 for printed circuit board mounting and SW60 free standing contactors and each has its own selection of variations and options. P C S E R I E S P C B M O U N T I N G M I N I A T U R E D C C O N T A C T O R S These are unique designs for printed circuit board mounting and the following variations and configurations are available: TYPE NO. DESCRIPTION PC60 Single Pole On/Off Normally Open Contactor (SP ST NO) PC61 Single Pole Changeover Contactor (SP DT) PC63 Single Pole On/Off Normally Closed Contactor (SP ST NC) Magnetic Blowouts PC60B, PC61B & PC63B The contactors can be fitted with magnetic blowouts for switching current at higher dc voltages (guide: >60V for resistive loads and >48V for inductive loads). If the application calls for frequent switching under these conditions, it is recommended that a contact housing with open apertures is specified. This is available as a no cost option. When fitted with magnetic blowouts it is important that the correct polarity for the main terminal connections is observed. Auxiliary Contacts PC60A, PC61A & PC63A A double circuit changeover 5 ampere microswitch auxiliary contact can be provided. This is fitted in a purpose designed holder with gold plated pickups for the microswitch terminals and pins for soldering direct to a printed circuit board. Protected Versions PC60.P, PC61.P & PC63.P These have closed contact housings, and are assembled with rubber gaskets to inhibit the ingress of moisture or other contamination. They are protected to IP66. These versions can be washed after soldering to the board and may be used in dirty or wet environments. Please note: Contactors fitted with auxiliary contacts cannot be fully protected against unfriendly environments. Washable Contactors with Auxiliary Contacts PC60A.W, PC61A.W & PC63A.W Normally the auxiliary contacts are supplied already fitted to the contactor but if the printed circuit boards are to be washed after soldering, the auxiliary contact is supplied separately and the contactor is temporarily sealed with a rubber plug which is removed after washing and the auxiliary contact is then fitted. The contactors are not therefore fully protected against the environment to the same degree as the PC60.P, PC61.P and PC63.P. P C S E R I E S P C 6 0 / 6 1 / 6 3 PC60A Dimensions in mm (inches). Installation 80 Ampere Miniature DC Contactors from... To accommodate the "PC" contactors, printed circuit boards should be drilled in accordance with the drawing on page 4. Prior to soldering, the PC60, PC61 and PC63 can be secured to the circuit board by means of a M4 bolt which protrudes from the underside of the contactor. If the full current ratings of the contactors are to be utilised, circuit board tracks should have the appropriate Explanation of Type Numbers thickness and width of copper. PC60 - A - B - P - W - M Conventional hand or wave soldering Magnetic Latching techniques can be used and if the Washable Contactors circuit board is to be washed the Rubber Gasket Protection With magnetic blowouts appropriate PC60.P, PC61.P, PC63.P With auxiliary contacts or PC60A.W, PC61A.W, PC63A.W Main type number should be specified. 3 M B S E R I E S C O N T A C T O R S W I T H A S E P A R A T E M O U N T I N G B A S E TYPE NO. DESCRIPTION MB60 PC60 with Mounting Base Normally Open Contactor (SP ST NO) MB61 PC61 with Mounting Base Changeover Contactor (SP DT) MB63 PC63 with Mounting Base Normally Closed Contactor (SP ST NC) M B All versions of "PC" contactors can be supplied with a separate mounting base which can be soldered to the circuit board. After soldering and washing the printed circuit board, the `PC' contactor can be plugged into the base and secured by means of a nut on the underside of the board. Removal for servicing or replacement is possible by removal of the nut and unplugging the PC contactor from the base. S E R I E S M B 6 0 / 6 1 / 6 3 MB60A Dimensions in mm (inches). P C / M B M O U N T I N G D E T A I L S 80 Ampere Miniature DC Contactors from... 4 Installation Mounting is by M4 tapped holes in the contactor frame together with a selection of mounting brackets. Standard arrangement is for the contactors to be supplied with two M4 holes on each side of the contactor frame to allow direct attachment to panels etc. For other options see left. Paired Contactors SW64 & SW66 The contactors can be supplied in assembled pairs with the appropriate connecting links. In the case of the SW66, the contactor is configured with links for motor reversing. The resultant circuit is failsafe so that if both coils are energised simultaneously, an open circuit results. S W 6 4 / 6 6 SW66A Dimensions in mm (inches). P C , M B & S W S E R I E S M A G N E T I C A L L Y L A T C H E D D C C O N T A C T O R S Please Note. Very Important: Magnetically latched contactors do not fail safe. If there is a power failure, or if the supply to the contactor coil is broken, the contactor contacts will not open or close, ie the contactor will not change state. These devices should not therefore be used in applications where the failure of contacts to open or close could result in a hazardous situation for persons or equipment. Magnetically Latched PC60, MB60 and SW60 PC60M, MB60M & SW60M The contactors can be supplied with magnetic latching - one short pulse to close the main contacts - one short pulse to reopen them again. The result is a bi-stable device, the coil of which consumes no power except during the closing and opening strokes, and because there is in effect no heating of the coil, the contactors can be engineered in the first place with more powerful coils and springs than with conventional contactors. Contact ratings and all external dimensions are identical to those of the equivalent types which have conventionally energised coils. Similarly all the additional features which are available with the other PC60 and SW60 types can be found with the magnetically latched versions, eg auxiliary contacts, magnetic blowouts for the main contacts, protected, etc. For more details of the operation of the "M" versions, please see the Albright publication: "Power Consumption Reduction for Albright Contactors". 6 S U M M A R Y O F T Y P E S A V A I L A B L E Contactor Key: SP = Single Pole; ST = Single Throw; DT = Double Throw; NO = Normally Open; NC = Normally Closed Printed Circuit Board Versions PC60 Single Pole On/Off Normally Open Contactor PC60 PC60A PC60B PC60P PC60A.W PC60M SP ST NO SP ST NO with 5A SP DT auxiliary contact fitted SP ST NO with magnetic blowouts SP ST NO protected against the environment SP ST NO washable with separately supplied auxiliary contact SP ST NO with magnetic latching PC61 Single Pole Changeover Contactor PC61 PC61A PC61B PC61P PC61A.W PC63 Single Pole On/Off Normally Closed Contactor SP DT SP DT with 5A SP DT auxiliary contact fitted SP DT with magnetic blowouts SP DT protected against the environment SP DT washable with separately supplied auxiliary contact PC63 PC63A PC63B PC63P PC63A.W SP ST NC SP ST NC with 5A SP DT auxiliary contact fitted SP ST NC with magnetic blowouts SP ST NC protected against the environment SP ST NC washable with separately supplied auxiliary contact The options `A', `B' & `M' may be mixed, as may `B', `P' & `M'; but note `A' & `P' are not possible. `A' & `W' can however be mixed (see text) "PC" Contactors with Mounting Bases MB60 Single Pole On/Off Normally Open Contactor with Mounting Base MB60 MB60A SP ST NO SP ST NO with 5A SP DT auxiliary contact fitted MB60B SP ST NO with magnetic blowouts MB60A.W SP ST NO washable with separately supplied auxiliary contact MB60M SP ST NO with magnetic latching MB61 Single Pole Changeover Contactor with Mounting Base MB63 Single Pole On/Off Normally Closed Contactor with Mounting Base MB61 MB61A SP DT SP DT with 5A SP DT auxiliary contact fitted MB61B SP DT With magnetic blowouts MB61A.W SP DT washable with separately supplied auxiliary contact MB63 MB63A SP ST NC SP ST NC with 5A SP DT auxiliary contact fitted MB63B SP ST NC with magnetic blowouts MB63A.W SP ST NC washable with separately supplied auxiliary contact The options `A', `B' & `M' may be mixed, as may `B', `P' & `M'; but note `A' & `P' are not possible. `A' & `W' can however be mixed (see text) Free Standing Versions SW60 Single Pole On/Off Normally Open Contactor SW60 SW60A SW60B SW60P SW60M SP ST NO SP ST NO with 5A SP DT auxiliary contact fitted SP ST NO with magnetic blowouts SP ST NO protected against the environment SP ST NO with magnetic latching SW61 Single Pole Changeover Contactor SW61 SW61A SW61B SP DT SP DT with 5A SP DT auxiliary contact fitted SP DT with magnetic blowouts 2 x SW60 2 x SW60A 2 x SW60B SW64P SW64M SW63 SW63A SW63B SW63P SW64 Paired Single Pole On/Off Normally Open Contactor SW64 SW64A SW64B SW63 Single Pole On/Off Normally Closed Contactor 2 x SW60P 2 x SW60M SP ST NC SP ST NC with 5A SP DT auxiliary contact fitted SP ST NC with magnetic blowouts SP ST NC protected against the environment SW66 Paired Single Pole Changeover Contactor SW66 2 x SW61 SW66A 2 x SW61A The options `A', `B' & `M' may be mixed, as may `B', `P' & `M'; but note `A' & `P' are not possible. 7