Technical Data

Dimmer Switches - Push Type

Brief product description: Features:

The subtle design will blend with any décor - suitable • Stylish modern profile
for domestic or commercial installations.
• Covers to conceal fixing screws
• Supplied with spacer adaptor plate

Product Images

881P/885P 882P 883P 884P

Technical Specifications

Standard(s) BS EN 60669-2-1
Rating 60 - 400W
Terminal Capacity - L & N 3 x 1mm² 2 x 1.5mm² 1 x 2.5mm²
RoHS Directive No
WEEE Directive No
Mounting Box Depth(Min) 25mm
Fixing Centres 60.3mm (881P, 882P, 885P products)
120.6mm (883P, 884P products)
Size 86mm x 86mm x 41.2mm (881P, 882P, 885P products)
146.5mm x 86mm x 41.2mm (883P, 884P products)
Dimmer Switches - Push Type
Line Diagrams

881P 883P

884P
882P

885P

Packaging Information

Cat No. Description Packaging Type Pack Quantity Barcode

Product Inner Box Outer Box Each Inner Outer Individual Inner Box Outer Box
Box Box
881P 1 Gang, 2 Way 400W Nexus PolyBag Nexus Inner Nexus Outer 1 10 100 5050765002592 / /
882P 2 Gang,2 Way 400W Nexus PolyBag Nexus Inner Nexus Outer 1 10 100 5050765002622 / /
883P 3 Gang, 2 Way 400W Nexus PolyBag Nexus Inner Nexus Outer 1 5 50 5050765002653 / /
884P 4 Gang, 2 Way 400W Nexus PolyBag Nexus Inner Nexus Outer 1 5 50 5050765002684 / /
885P 1 Gang, 2 Way 1000W Nexus PolyBag Nexus Inner Nexus Outer 1 5 50 5050765018142 / /

Weights & Dimensions

Cat No. Description Dimension (W x L x H) cm Weight (g) CMB (m3)

Product Inner Box Outer Box Each Inner Outer Outer Box
Box Box
881P 1 Gang, 2 Way 400W 9.2 x 9.2 x 18 x 22.5 x 9.2 37 x 49.5 x 23.5 18 1285 13600 0.029
882P 2 Gang,2 Way 400W
883P 3 Gang, 2 Way 400W
884P 4 Gang, 2 Way 400W
885P 1 Gang, 2 Way 1000W

Installation Information
Safety Warning
Before use please read carefully and use in accordance with these safety wiring instructions.
Before commencing any electrical work ensure the supply is switched off at the mains. Either by switching off the consumer unit or by removing the appropriate fuse.
Wiring should be in accordance with the latest edition of the IEE regulations (BS 7671).

Wire Identification – Twin & Earth Cable

EARTH = Green/Yellow Sleeving Technical Helpline: 0845 194 7584
NEUTRAL = Black (pre Apr 04) / Blue (after Apr 04) If in doubt consult a competent electrician.
LIVE = Red (pre Apr 04) / Brown (after Apr 04)
The ends of the individual conductors should have the insulation removed by approx.12mm. Any bare earth conductors should be sleeved to within 12mm of the ends.
(These details are for general information only and conductor lengths may need to be trimmed in certain installations).
Dimmer Switches - Push Type

Installation Information
General Installation Instructions
1) If using the new product to replace an old one, note the cable connections and wire up new product in the same way as the old one, with Earthing as stated in these instructions.
2) Ensure the mounting box (metal or patress) for either flush or surface mounting is the appropriate size for the product.
3) Route the cable through the most suitable entry point of the mounting box. If a metal box is used, a protective cable grommet should be used.
4) Cables should be prepared so a sufficient conductor length reaches the terminals. Strip the ends of the individual conductors so that an adequate length enters the terminals.
5) Carefully arrange the wiring to lie along the edges of the product or box, keeping the central area clear.
6) To assist with the correct installation please consult the appropriate wiring diagram on this leaflet.
7) When connecting the new accessory ensure that only the bare end of the wire enters the terminal, and no bare wires are visible.
Always tighten the terminal screws securely, but do not overtighten.
An earth connection should always be made between the mounting box earth terminal, and the accessory earth terminal, where fitted. If this earth wire is bare, it is essential that it is sheathed
with a length of green/yellow sleeving.
8) Carefully position the accessory into the wall box, ensuring that no wires are trapped between the plate and the wall. Do not overtighten the screws. (Fit screw covers + clip-on)
9) Once work has been completed correctly, replace the fuse for the circuit, switch the power back on, and test.
The product is now ready for use.
* Note - If your installation uses a four lug metal mounting box, remove the top and bottom lugs or bend fully back.
One Way Switching Two Way Switching
One way switching is used in installations where the lights are switched from just one Two way switching is used in installations where a light is controlled from two separate
position. Connect the dimmer unit as shown in the diagram. positions. The dimmer may replace only one of these switches, and may be fitted in either
position. Connect the dimmer unit as shown in the diagram.
TO LIGHT TO LIGHT
SWITCHED EARTH LIVE
LIVE EARTH SWITCHED
LIVE
LIVE
1-WAY (ROTARY) OR
2-WAY (PUSH ON/OFF)
DIMMER SWITCH

2-WAY (PUSH ON/OFF) 2-WAY PLATE SWITCH

BROWN SLEEVE TO BE DIMMER SWITCH
ADDED TO SWITCHED LIVE

COM

COM
L2 L1

COM
L2 L1
L2 L1

BROWN SLEEVE
TO BE ADDED TO
For multiple gang Dimmer (2, 3 & 4) SWITCHED LIVE
repeat wiring method for each Dimmer.

For multiple gang Dimmer (2, 3 & 4) All earth wires must be sleeved
All earth wires must be sleeved repeat wiring method for each Dimmer. and terminated to the back box
and terminated to the back box

1000W Dimmer (Export Only)

Plate Size No. of Max. each Min. each Max. total
TO LIGHT Dimmers Dimmers Dimmers per plate

LIVE EARTH SWITCHED

BROWN SLEEVE TO BE 1 250W 40W 250W
LIVE 1 400W 60W 400W
ADDED TO SWITCHED LIVE
Square plates 1 630W 60W 630W
86mm x 86mm 2 250W 40W 250W
2 400W 60W 630W*

*Maximum load of 630W for the plate should not be exceeded.

COM
Plate Size No. of Max. each Min. each Max. total
L2 L1
Dimmers Dimmers Dimmers per plate
1 1000W 150W 1000W
2 630W 60W 1000W*
Rectangular plates 3 250W 40W 750W
All earth wires must be sleeved 86mm X 146mm
and terminated to the back box 3 400W 60W 1000W*
4 250W 40W 1000W*
4 400W 60W 1000W*
*Maximum load of 630W for the plate should not be exceeded.

Please Note:
The dimmer is a LEADING EDGE type.
The dimmer unit will emit a faint buzz and may become warm while in operation, this is quite normal and no cause for concern.
Tungsten Lighting
Tungsten dimmers are not suitable for dimming any transformer, low voltage, fluorescent or motor loads.
Mains voltage tungsten halogen lamps may be dimmed, but the maximum rating of the dimmer must be de-rated by 50% (i.e., a 40-250W dimmer must be treated as 40-125W, a 60-400W
dimmer as 60-200W, etc.)
Low Voltage Lighting
2-Way (Push ON/OFF) low voltage dimmers are only suitable for dimming wire wound laminated and some dimmable electronic transformers.
They are not suitable for dimming torodial transformers, Flourescent or Tungsten Lamps. Many electronic transformers are not dimmable and many which claim to be dimmable may not be
compatiable. Most UK dimmers, use a 'leading edge' principle, therefore, transformers which require a 'trailing edge', 'falling edge', 'phase lagging' or 'transistor' dimmer, must not be used. To
dim any compatiable transformer, a low-voltage (inductive) dimmer must always be used.
These are not 'inductive only' dimmers.
The dimmer VA rating refers to the total circuit load, not lamp load. Allow for transformer losses. Typically 20% (or 15% for electronic transformers). Therefore, maximum load for 400VA dimmer
becomes 330W (350W electronic), and 250VA becomes 210W (215W for electronic).
Low voltage dimmers should be connected on the 'mains side' of the transformer.
Load resistors are not required.
Transformers should be installed in accordance with the manufacturer's instructions. If setup with laminated transformer either buzzes excesively or lights flicker, it may be necessary to install a
snubber circuit across the transformer primary. (one per dimmer circuit).