K70 Enclosure Series The K70 series enclosures are small to medium in size and offer Printed circuit boards can be mounted in three ways: Vertically cost effective solutions for many applications. Horizontally Behind the Front Cover They can accommodate 8 to 32 terminals for field wire connections. Pressure plate terminals are standard with both the Boards can be placed vertically (perpendicular to the DIN rail) fixed and pluggable versions. and/or horizontally (parallel with the DIN rail). Enclosures with plug-in covers can accept an additional board mounted directly MATERIALS behind the front cover. This board is ideal for mounting Housing indicating devices such as LEDs, LCDs for monitoring, switches Housing Shell: ABS and potentiometers for setting and adjusting purposes. The Housing Cover: Polycarbonate, 10% Glass Filled housing cover snaps onto the housing shell. Two tabs lock the cover firmly in place. Removal of the cover is possible for service Terminals and repair. Potting is possible. Pressure Plate: Chromated Steel Terminal Screw: Chromated Steel Connector Contact: Tin Plated Bronze Temperature Range: 60C (140F) UL94VO Standard Color: Light Gray PROTECTION K7O enclosures have an IP10 rating (hand protected). By using optional terminal covers the protection rating can be increased to IP20 (finger protected). VBG4 and other European accident prevention requirements are met. CONSTRUCTION The K70 enclosures are supplied as unassembled kits. Each kit consists of a housing shell and a snap-on cover, complete with integral terminals and terminal-to-board The K70 housing covers have external and internal barriers connection provisions. Integral printed circuit board guides are between terminals to increase creepage distance and to help molded into the housing shell to save time when inserting prevent accidental touching of live potentials that may be boards, to prevent misconnections and to keep the boards in present. Optional terminal covers that decrease the size of the place. Integral tabs on the bottom of the shell further help to opening are available as accessories. hold the boards in place and eliminate lateral movement and warpage. Altech Corp. 35 Royal Road Flemington, NJ 08822-6000 Phone (908)806-9400 FAX (908)806-9490 www.altechcorp.com 4TERMINALS Pressure Plate terminals with either fixed or pluggable terminal- For better retention, to-board connections are offered in the K70 enclosures. The the plug-in type pressure plate, which is captive to the terminal screw, covers have captive automatically rises when the screw is loosened. One or two screws at the corners 2 wires of equal or different sizes up to 2.5mm (14 AWG) can be that insert into brass terminated in each terminal. The grooved corners of the bushings, molded pressure plate ensure positive wire retention. The flat bottom of into the housing the terminal extends to the inside of the enclosure and provides shell. The pluggable the terminal-to-board connection. The terminal screws can be versions are ideal turned by a flat tip or a 2 Phillips screwdriver. whenever quick connections and Upon request, terminals can be loaded in selected positions replacement are only. important. They also reduce the danger of misconnected wires and downtime. MOUNTING The K70 Enclosures mount easily by snapping onto standard 35mm DIN Rail. Many can also be panel mounted using corner mounting holes which accept two M4 or M5 ( 6 or 10) screws. These mounting holes are molded into two corners of the housing shell base and do not increase the height or width of the enclosure, thus insuring a compact, high density arrangement when multiple enclosures are installed adjacent to each other. Enclosure types K7022.5A, K7022.5B and K7022.5C have two integral pull-out tabs on the base of the enclosure for panel mounting. (Refer to Enclosure Mounting Procedures on page 19.) MARKING The K70 enclosures have an area on the front of the cover for TERMINAL-TO-BOARD CONNECTIONS marking and mounting of components such as switches, The K70 series offers fixed and pluggable terminal-to-board potentiometers, LEDs or LCD indicators. Custom imprinted connection possibilities. plates can be inserted as well, allowing imprinting of plates separate from the enclosure, reducing cost and delays. Fixed Connections Fixed terminal-to-board connections can be made by Wire ACCESSORIES Jumper, Fast On tabs or Machine Solderable Pins (K7022.5C 35 x 7.5 mm DIN Rail only). Terminal Covers Pull-Out Panel Mounting Tabs. Fast On tabs, (2.8 x 0.8 mm) accept industry standard Fast On connectors crimped onto wire jumpers. Wire Jumper connections can also be made by soldering a wire jumper between the center holes of the Fast On tab and the printed circuit board(s). CUSTOMIZATION Enclosures can be Machine Solderable Pins (offered only with type customized with cutouts K7022.5C) can be removed from the enclosure and machine and holes for soldered to the board in the same step as other components, potentiometers, switches, saving assembly time. LEDs, LCDs and other devices. Using state of the Pluggable Connections art machining, we can Pluggable terminal-to-board connections are made by using punch, drill or cut to your Card Edge connectors. They are an integral part of the covers most exacting of K7075P, K70100P and K70150P and plug directly onto the specifications. Custom board(s). Solder Pins are also provided in these enclosures for colors and special markings terminal-to-board connections when mounting an additional are also available. Please let board directly behind the front cover. A Wire Jumper can be us know what your soldered to these pins as well. requirements are. Altech Corp. 35 Royal Road Flemington, NJ 08822-6000 Phone (908)806-9400 FAX (908)806-9490 www.altechcorp.com 5