LED Indicator Light Pakistan 2026: 22mm Pilot Lamp
LED Indicator Light Pakistan 2026 — 22mm Panel Pilot Lamp Colour Code & Wiring
Last verified: 2026-05-29 · Author: CNC Electric Pakistan Engineering Team · Reading time: 6 min
The 22mm LED indicator light (pilot lamp) is the most common signalling device on Pakistani electrical panels. The right colour-coded indicator tells operators at a glance whether a motor is running, a fault has occurred, or the system is in maintenance mode. Get the colour code wrong and operators ignore real faults; get the voltage rating wrong and your indicators fail every few months.
Quick Answer — IEC 60204-1 Colour Code
| Colour | IEC 60204-1 Meaning | Typical Pakistani Use | Price (PKR) |
|---|---|---|---|
| Red | Fault / dangerous condition / immediate action required | Trip indication, overcurrent, fault alarm | Rs. 180 – 380 |
| Green | Normal / equipment ready / safe | "Motor running", "Power on", "Ready" | Rs. 180 – 380 |
| Yellow / Amber | Caution / abnormal but not yet failure | High temperature, low pressure, pre-trip warning | Rs. 180 – 380 |
| White / Clear | Confirmation / neutral information | "Lamp test", general indication, voltage present | Rs. 180 – 380 |
| Blue | Mandatory action by operator | "Press reset", "Acknowledge alarm" | Rs. 220 – 420 |
| Red Buzzer | Audible alarm + visual | Critical fault, emergency stop activated | Rs. 850 – 1,600 |
Voltage Ratings — Wide-Range vs Fixed
Modern LED pilot lamps come in two distinct voltage variants:
| Variant | Voltage Window | Use |
|---|---|---|
| Wide-range LED 12-48V DC | 12 / 24 / 48 V DC any | PLC outputs, instrumentation panels |
| Wide-range LED 110-240V AC | 110 / 220 / 240 V AC any | Standard Pakistani 220V AC panels |
| Fixed 24V DC | 24V DC only ±10% | Older industrial control |
| Fixed 230V AC | 230V AC ±10% | Direct line voltage on contactor auxiliaries |
| Filament 24V (legacy) | 24V AC/DC | Old installations — replace with LED, saves 80% energy |
Pakistani recommendation: standardise on 110-240V AC wide-range LED for AC panels and 12-48V DC wide-range LED for PLC-driven indications. This means one part number works across multiple voltage scenarios.
22mm Standard — Mounting & Compatibility
22mm is the universal IEC standard for panel-mount indicators, push buttons, and selector switches. Mount-hole specification:
- Hole diameter: 22.5mm ±0.4mm
- Panel thickness: 1-6mm with included rubber gasket (IP65 sealing)
- Behind-panel depth: 35-45mm (allow clearance from wires + busbars)
- Centre-to-centre spacing: ≥30mm (to fit standard finger-touch)
This means an indicator, a push button and a selector switch all use the same panel hole — change function without re-drilling.
Wiring Diagrams — Common Configurations
"Motor Running" Green Indicator
Wire the green indicator across the auxiliary NO contact of the motor contactor. When contactor pulls in, aux contact closes, indicator lights. Cost: Rs.180-280 for the indicator + 2 metres of 1mm² wire.
"Overload Trip" Red Indicator
Wire the red indicator across the auxiliary NC contact of the overload relay (1NC contact opens on trip). Use NC of the overload (so light goes OUT when overload pulls in NC opens — wait, that's wrong). Better: use NO contact of the trip mechanism that closes on trip. Many CNC overload relays have a dedicated trip-indication contact (terminal 96).
"Fault" Red Lamp + Buzzer
Combine a red LED indicator + 80dB buzzer in series on a fault condition. When the fault occurs, the lamp lights and the buzzer sounds. Add a "Silence" push button (latching relay) to acknowledge the buzzer while keeping the lamp on until fault is cleared.
"Lamp Test" White Push-to-Light
Wire all indicators on the panel through a master "Lamp Test" white push button. Pressing it energises all lamps simultaneously to verify they work — done weekly as part of panel walk-around.
FAQs
What is the price of an LED indicator light in Pakistan?
CNC 22mm LED panel indicator lights: standard colours (red/green/yellow/white) from Rs.180-380; blue Rs.220-420; illuminated push-button combo Rs.450-650; indicator + buzzer combo Rs.850-1,600; weatherproof IP67 Rs.480-720.
What colour LED for what function?
IEC 60204-1 colour code: Red = fault/danger; Green = normal/ready; Yellow = caution/warning; White = neutral information; Blue = mandatory operator action. Always follow this standard — operators worldwide are trained to recognise it.
Can I use 220V AC indicators on 24V DC?
No — 220V indicators have a 4-5K series resistor that will not drop 24V down to LED operating voltage; the LED won't light. Use the correct voltage variant or buy wide-range (12-240V) units that work across both.
How long do LED indicators last?
Quality LED indicators (CNC, Schneider, Siemens) are rated 50,000+ hours = 5-7 years of continuous operation. Cheap unbranded units fail in 6-18 months due to driver circuit failures. Pay Rs.180 for branded vs Rs.80 for unbranded — pays back in maintenance time.
Do I need a separate transformer for 24V indicators?
If you have other 24V loads on the panel (PLCs, relays) already, share that supply. If you only need a few indicators, just use 220V AC variants directly — no transformer needed. Pakistani panels are mostly 220V AC native; 24V is for control circuit signalling.
Related CNC Categories
- Panel Indicator Lights — 22mm LED full colour range
- Push Buttons — 22mm matching aesthetics
- Selector Switches — same 22mm mounting standard
- Magnetic Contactors — paired with running/stopped indicators
- Push Button Switch Pakistan 22mm Guide
- Emergency Stop Button Pakistan IEC 60204 Guide