K70 Printed circuit boards can be mounted in three ways: Vertically Series Horizontally Behind the Front Cover Boards can be placed vertically (perpendicular to the DIN rail) and/or horizontally (parallel with the DIN rail). Enclosures with plug-in covers can accept an additional board mounted directly behind the front cover. This board is ideal for mounting indicating devices such as LEDs, LCDs for monitoring, switches and potentiometers for setting and adjusting purposes. The housing cover snaps onto the housing shell. Two tabs lock the cover firmly in place. Removal of the cover is possible for service and repair. Potting is possible. The K70 housing covers have external and internal barriers between terminals to increase creepage distance and to help prevent accidental touching of live potentials that may be present. Optional terminal covers that decrease the size of the The K70 series enclosures are small to medium in size and opening are available as accessories. offer cost effective solutions for many applications. They can accommodate 8 to 32 terminals for field wire connections. Pressure plate terminals are standard with both the fixed and pluggable versions. MATERIALS Housing Housing Shell: Polycarbonate, 10% Glass-filled Housing Cover: Polycarbonate, 10% Glass-filled Terminals Pressure Plate: Chromated Steel Terminal Screw: Chromated Steel TERMINALS Connector Contact: Tin Plated Bronze Pressure Plate terminals with either fixed or pluggable terminal- Temperature Rating: 125C (257F) UL94VO to-board connections are offered in the K70 enclosures. The Standard Color: Light Gray pressure plate, which is captive to the terminal screw, automatically rises when the screw is loosened. One or two PROTECTION 2 wires of equal or different sizes up to 2.5mm (14 AWG) can be K7O enclosures have an IP10 rating (hand protected). By using terminated in each terminal. The grooved corners of the optional terminal covers the protection rating can be increased pressure plate ensure positive wire retention. The flat bottom of to IP20 (finger protected). VBG4 and other European accident the terminal extends to the inside of the enclosure and provides prevention requirements are met. the terminal-to-board connection. The terminal screws can be turned by a flat tip or a 2 Phillips screwdriver. CONSTRUCTION The K70 enclosures are supplied as unassembled kits. Upon request, terminals can be loaded in selected positions Each kit consists of a housing shell and a snap-on cover, only. complete with integral terminals and terminal-to-board connection provisions. Integral printed circuit board guides are molded into the housing shell to save time when inserting boards, to prevent misconnections and to keep the boards in place. Integral tabs on the bottom of the shell further help to 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 40K70 Series For better retention, the plug-in type covers have captive screws at the corners that insert into brass bushings, molded into the housing shell. The pluggable versions are ideal whenever quick connections and replacement are 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 TERMINAL-TO-BOARD CONNECTIONS K7022.5C have two integral pull-out tabs on the base of the The K70 series offers fixed and pluggable terminal-to-board enclosure for panel mounting. (Refer to Enclosure Mounting connection possibilities. Procedures on page 49.) Fixed Connections MARKING Fixed terminal-to-board connections can be made by Wire The K70 enclosures have an area on the front Jumper, Fast On tabs or Machine Solderable Pins (K7022.5C of the cover for marking and mounting of only). components such as switches, potentiometers, LEDs or LCD indicators. Fast On tabs, (2.8 x 0.8 mm) accept industry standard Fast On Custom imprinted plates can be inserted as connectors crimped onto wire jumpers. well, allowing imprinting of plates separate from the enclosure, reducing cost and delays. Wire Jumper connections can also be made by soldering a wire jumper between the center holes of the Fast On tab and ACCESSORIES the printed circuit board(s). 35 x 7.5 mm DIN Rail Terminal Covers Machine Solderable Pins (offered only with type K7022.5C) Pull-Out Panel Mounting Tabs. can be removed from the enclosure and machine soldered to the board in the same step as other components, saving CUSTOMIZATION assembly time. Enclosures can be customized with cutouts and holes for potentiometers, switches, LEDs, LCDs and other devices. Pluggable Connections Using state of the art machining, we can punch, drill or cut to Pluggable terminal-to-board connections are made by using your most exacting specifications. Custom colors and special Card Edge connectors. They are an integral part of the covers markings are also available. Please let us know what your of K7075P, K70100P requirements are. and K70150P and plug directly onto the board(s). Solder Pins are also provided in these enclosures for terminal-to-board connections when mounting an additional board directly behind the front cover. A Wire Jumper can be soldered to these pins as well. Altech Corp. 35 Royal Road Flemington, NJ 08822-6000 Phone (908)806-9400 FAX (908)806-9490 www.altechcorp.com 41