KM6 Plug-in-Units (IEC 297)

There are two main types of plug-in unit, “Standard” and “Enhanced”. Standard types are constructed with module guide rails and incorporate the standard (version 1) front panels described above, with 3HP-9HP units having 2 x rails and 10HP-42HP units having 4 x rails. Enhanced types use an extruded side cover which incorporates a guide rail top and bottom. They are more robust and provide a higher level of shielding than standard types. They use the standard (version 2) front panels described above with a chromated inner face. 6HP-10HP units have a single left-hand extruded cover (2-Rail) with the right cover being formed metal, whilst on 12HP-42HP units, both side covers are extruded (4-Rail).

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2 Rail Plug-in Units

Standard 2 Rail plug-in units essentially consist of a front panel, a top & bottom aluminium guide rail and two connector mounting brackets which serve to retain the PCB in place. Supplied as a kit, they accept a standard size eurocard and provide two main advantages over using a standard front panel:
1) They place the PCB 5.08mm (1HP) to the left thus maximizing the use of space for components (alternatively they can be placed in the standard eurocard slot position)
2) They provide the means to attach metal top, bottom and side covers to enclose the PCB, offering mechanical and electrical screening & protection.
Note: 2 Rail plug-in units are 111.8mm (3U) and 245.2mm (6U) in height (as opposed to 100mm / 233.4mm) and therefore must be used with low profile “plug-in unit” guides within a subrack.

Height Width (HP) 160mm Deep 220mm Deep
3U 3HP 957-236290 957-236307
4HP 957-236294 957-236308
5HP 957-236297 957-236309
6HP 957-236298 957-236310
7HP 957-236304 957-236311
8HP 957-236305 957-236312
9HP 957-236306 957-236313
6U 4HP 957-236315 957-236321
5HP 957-236316 957-236322
6HP 957-236317 957-236339
7HP 957-236318 957-236340
8HP 957-236319 957-236341

PCB / Connector Mounting Brackets
When the alternative (standard eurocard slot) PCB position is employed, “Alternative” PCB / connector mounting brackets should be used (order separately). “Normal” brackets are supplied in all plug-in units.

Description Quantity Order Code
Normal – PCB Position 1HP Left 10 174-13019
Alternative – PCB in Standard Eurocard Slot 10 174-13020

3U, 2 Rail, Plug-in Unit Screen Kits

Left and right side screens are designed to provide a protective cover for components on a printed circuit board when mounted in a plug-in unit. Left hand screens protect the solder side of a PCB and are available in two depths of 160mm and 220mm.They slide into the module rails in the “normal” (1HP left) card position, meaning they can only be used when the PCB is in the “alternative” (standard eurocard) position. Each screen is therefore supplied with a pair of “alternative” mounting blocks which retain the screen at the rear of the module guide rails.
Right hand screens protect the component side of a PCB and also form the top, bottom & rear cover. They bolt directly to the module guide rail and are available in widths of 4HP-9HP and depths of 160mm and 220mm. A cut out in the rear provides clearance for a standard DIN 41612 connector.
Note: where a 2 rail module is fitted to the left of a divider kit, it is necessary to fit a right hand screen at least 1hp less than the width of the front panel to allow clearance for the divider plate.

Left Hand Screen

Size 160mm Deep 220mm Deep
Order Code 174-13021 174-12645

Right Hand Screen

Size 160mm Deep 220mm Deep
3U x 4HP 174-13023 174-12647
3U x 5HP 174-13024 174-4004418
3U x 6HP 174-13025 174-12648
3U x 7HP 174-13026 174-4004422
3U x 8HP 174-13027 174-4004424
3U x 9HP 174-13028 174-4004426

4 Rail Plug-in Units

Standard 4 Rail plug-in units essentially consist of a front panel, top & bottom aluminium guide rails, rear connector plate and connector mounting brackets which serve to retain the PCB in place. Supplied as a kit, they accept a standard size eurocard and provide two main advantages over using a standard front panel:
1) They place the PCB 5.08mm (1HP) to the left thus maximizing the use of space for components (alternatively they can be placed in the standard eurocard slot position).
2) They provide the means to attach metal top, bottom and side covers to enclose the PCB, offering mechanical and electrical screening & protection.
Note: 4-Rail plug-in units are 111.8mm (3U) and 245.2mm (6U) in height (as opposed to 100mm / 233.4mm) and therefore must be used with low profile “plug-in unit” guides within a subrack.

Size Width (HP) 160mm Deep 220mm Deep
3U 10HP 957-236386 957-236399
12HP 957-236387 957-236400
14HP 957-236388 957-236401
21HP 957-236389 957-236402
24HP 957-236390 957-236403
42HP 957-236391 957-236404
6U 10HP 957-236393 957-236405
12HP 957-236394 957-236406
14HP 957-236395 957-236407
24HP 957-236397 957-236409
42HP 957-236398 957-236410

PCB / Connector Mounting Brackets
When the alternative (standard eurocard slot) PCB position is employed, “Alternative” PCB / connector mounting brackets should be used (order separately). “Normal” brackets are supplied in all plug-in units.

Description Quantity Order Code
Normal – PCB Position 1HP Left 10 174-13019
Alternative – PCB in Standard Eurocard Slot 10 174-13020

3U, 4 Rail Plug-in Unit Screen Kits

Module screens are designed to provide a protective cover for components on a printed circuit board when mounted in a plug-in unit. Left hand screens protect the solder side of a PCB and are available in two depths of 160mm and 220mm.They slide into the left module rails in the “normal” (1HP left) card position, meaning they can only be used when the PCB is in the “alternative” (standard eurocard) position. Each screen is therefore supplied with a pair of “alternative” mounting blocks which retain the screen at the rear of the module guide rails. Right hand screens are similar in design to the left screens. They locate in the right module rail, are retained by “alternative” mounting blocks (supplied) and are available in depths of 160mm and 220mm. Top and bottom covers are vented, allowing airflow through the module when in a suitably cooled subrack. They bolt directly to the modules guide rails and are available in widths of 10HP to 24HP and depths of 160mm and 220mm.
(Note 1: the metal “break off” part of the rear panel should be removed when fitting a right hand screen as it is no longer required to retain the PCB.)
(Note 2: when fitted to the left of a divider kit, the module should be fitted with the alternative right screen to allow clearance for the divider plate.)

Left and Right Hand Screens

Description 160mm Deep 220mm Deep
3U Right Hand 174-13035 174-12649
3U Right Hand (Alternative) 174-13021 174-12645
3U Left Hand 174-13021 174-12645

Top and Bottom Screens

Width (HP) 160mm Deep 220mm Deep
10HP 174-12965 174-12639
12HP 174-12966 174-4004430
14HP 174-12967 174-4004432
21HP 174-12968 174-12640
24HP 174-12969 174-4004436

3U, 2 Rail Enhanced Plug-in Unit

Supplied in kit form, the KM6 extruded plug-in unit offers strength and simple assembly.
Construction is based on a conductive, extruded side plate offering new facilities. Right hand covers, with a rear cut-out for DIN 41612 connectors, slot into angled groves in the extrusion and are retained positively at the rear of the module. On high level screening level versions, additional fixings are provided at the front and rear to maintain limited slot lengths. Metal inserts are provided for electrical continuity when fitting into a subrack. Features are provided in the extrusion for 2 x 160mm/220mm tapped strips offering facilities for mounting components. Single eurocard / connector assemblies can be attached with seperate metal mounting brackets. These modules mount to two PCB guides; 950-232662 (pk10) for the 160mm deep module or 950-232663 (pk10) for the 220mm deep version.

160mm Deep Version

Height Width (HP) FP Width PCB Component Heigh Max Normal Version High Level Screening
3U 6HP 30.08 12.6mm 951-263113 951-236117
7HP 35.16 17.7mm 951-263114 951-263118
8HP 40.24 22.8mm 951-263115 951-263119
10HP 50.4 32.9mm 951-263116 951-263120

220mm Deep Version

Height Width (HP) FP Width PCB Component Heigh Max Normal Version High Level Screening
3U 6HP 30.8 12.6mm 951-263903 951-263906
8HP 40.24 22.8mm 951-263904 951-263907
10HP 50.4 32.9mm 951-263905 951-263908

Order Separately

Description Pack Order Code
Metal Front Panel Bush 100 953-236506
PCB/Connector Mounting Bracket 5 951-263755
Tapped Strip M2.5 x 160mm 10 951-263756
Tapped Strip M2.5 42HP Wide 1 950-202739

160mm and 220mm Depth 4 Rail Enhanced Plug-in Unit

Supplied in kit form, the KM6-II extruded plug-in unit offers strength and simple assembly. Construction is based on two conductive extruded side plates offering new facilities. Ventilated top and bottom covers slide into angled grooves in the extrusions. Rear covers, with a cut-out for DIN 41612 connectors, screw to the side extrusions.
On high screening level versions, additional fixings are provided at the front and rear to maintain limited slot lengths. Metal inserts are provided for electrical continuity when fitting to the subrack. Features are provided in the extrusion for two x 160mm tapped strips offering facilities for mounting components. Single Eurocard/connector assemblies can be attached with separate metal mounting brackets.These modules mount to four PCB guides: 950-232662J (PK.10) for the 160mm deep module or 950-232663G (PK.10) for the 220mm deep version.

160mm Deep Version

Height Width (HP) FP Width PCB Component Heigh Max Normal Version High Level Screening
3U 12HP 60.56 39.2mm 951-263121 951-263126
14HP 70.72 49.3mm 951-263122 951-263127
21HP 106.28 84.9mm 951-263123 951-263128
24HP 121.52 100.1mm 951-263124 951-263129
42HP 212.96 191.6mm 951-263125 951-263130

220mm Deep Version

Height Width (HP) FP Width PCB Component Heigh Max Normal Version High Level Screening
3U 12HP 60.56 39.2mm 951-263909 951-263913
14HP 70.72 49.3mm 951-263910 951-263914
21HP 106.28 84.9mm 951-263911 951-263915
24HP 121.52 100.1m 951-263912 951-263916

Order Separately

Description Pack Order Code
Metal Front Panel Bush 100 953-236506
PCB/Connector Mounting Bracket 5 951-263755
Tapped Strip M2.5 x 160mm 10 951-263756
Tapped Strip M2.5 42HP Wide 1 950-202739

Plug-in Unit Accessories - Plug-in Unit and Front Panel Fixings

Plug-in Unit and Front Panel Fixings

Function Type Quantity Order Code
Connector to Mounting Block M2.5 x 10mm 100 41-20505
Connector to PCB M2.5 x 10mm 100 41-20505
Nut for above M2.5 x 10mm 100 27-1319
Handle to Front Panel M2.5 x 16 100 174-63105

Plug-in Unit Accessories - Module Guide Rails

Available to purchase separately are the module guide rails used on, the standard 2-rail and 4-rail plug-in units. Supplied singly in 160mm or 220mm lenghts.

Description Order Code
160mm (Full Holes) 185-4020049
220mm (Full Holes) 185-4010291
160mm 174-39378
220mm 174-39377