24 Hour
Mechanical Time
Installation & Operating Instructions
Switch with
Voltage Free
Contacts
Model: NTT02
1. General Information
These instructions should be read carefully
and retained for further reference
and maintenance.
2. Safety
• Before installation or maintenance,
ensure the mains supply to the time switch is
switched off and the circuit supply fuses are
removed or the circuit breaker turned off.
• It is recommended that a qualified electrician
is consulted or used for the installation of this
time switch and install in accordance with the
current IEE wiring and Building Regulations.
• Check that the total load on the circuit
including when this time switch is fitted
does not exceed the rating of the circuit cable,
fuse or circuit breaker.
3. Technical Specifications
1
• 230V AC 50 Hz
• Switch Rating: 16A Resistive (3.68kW)
Immersion Heaters
750W Incandescent,
Halogen
Fluorescent lighting
100W Compact
fluorescent lighting
100W LED Lighting.
The LED switching capabilities of this product
can be increased to 200W by the addition of
the Timeguard ZV900 Automatic switch load
controller – sold separately.
• Switch Type: Micro Switch
• Voltage free contact
• Contact Type: Normally Open
• Minimum Depth
of Wall Box: 32mm
• Manual Override: Permanent ON or OFF
• Power Status LED Indicator: Red
• Output LED Indicator: Green
• 24 Hour Time period: Up to 48 programmes
per day
• Operating Temperature: 0°C to +40°C
• CE Approved
Note: Not suitable for use with
discharge lighting.
Power LED
Programme
ring
Bezel
fixing
screws
2
ON
segment
Time control segments:
1 segment = 15 minutes,
push segment down
for ON, pull up for OFF.
4. Installation
• Ensure the mains supply is switched off
and the circuit supply fuses are removed
or the circuit breaker turned off.
• Remove the two bezel fixing screws,
and remove bezel from timer module
and wall plate.
• Ease the module forward without disconnecting,
so you have access to the wall plate
and loosen the screws on the terminal
block for both supply and load cables.
Bezel
Time
indicator
Control switch:
1 = permanently ON,
Timer symbol =
timed control,
0 = permanently OFF.
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