UMS 20A Aircond Switch 9120N-AC
The UMS 9 Series 20A 1 Gang 1 Way DP Switch (Neon) with Marking (9120N-AC) is a SIRIM-approved high-load wall switch designed for heavy electrical appliances such as air conditioners and water heaters. Rated at 20 Amperes (250V AC), it disconnects both live and neutral wires simultaneously via a Double Pole mechanism for complete safety. Features a built-in red neon indicator light, clear "Air Conditioner" laser marking, and a fire-retardant polycarbonate housing.
Full Description:
High-Capacity Heavy Duty Electrical Control
Standard residential wall switches are designed for 10A lighting or low-power circuitry. The UMS 9 Series 20A Double Pole Switch handles heavy electrical loads up to 20 Amperes (250V AC). This makes it ideal for running single-phase residential air conditioning units (up to 2.5 HP) and high-power storage or instantaneous water heaters safely without electrical overload.
Advanced Double Pole (DP) Safety Architecture
Safety is essential when dealing with high-wattage home appliances. The UMS 9120N-AC utilizes a true Double Pole (DP) switching mechanism. Unlike single-pole switches that cut off only the live wire, this DP switch breaks both Live (L) and Neutral (N) lines simultaneously. This ensures zero residual voltage reaches your appliance when switched off, protecting your home against electric shocks, neutral feedback loops, and lightning surge risks.
Neon Light Indicator & Clear Identification Marking
The switch faceplate includes a bright red neon indicator bulb. It illuminates automatically when current flows through the circuit, giving you quick visual status at night or from across the room. Factory-printed with clear "Air Conditioner" marking, it eliminates guesswork on crowded switch boards.
Premium Build & Malaysian Standards Compliance
Manufactured from high-grade, impact-resistant, fire-retardant polycarbonate, the UMS 9 Series switch resists yellowing, heat degradation, and physical wear over time. It complies fully with Malaysian and International Standards:
- MS IEC 60669-1 (Malaysian Standard for Switches)
- IEC 60669-1 & BS EN 60669-1 (International & British Standard)
- SIRIM & JKR Approved for domestic and commercial projects in Malaysia.
Easy Installation & Universal Mounting
Designed to standard 86mm x 86mm dimensions, the UMS 9120N-AC switch fits into standard Malaysian concealed backboxes (pattress box) or surface-mount casing boxes. Equipped with heavy-duty brass terminal block screws, electrician installation is quick, secure, and hassle-free.
Q1: Can I use a 20A DP switch for a water heater?
A: Yes, 20A DP switches work for both air conditioners and water heaters. However, the 9120N-AC variant has an "Air Conditioner" text label.
Q2: Why does my aircond switch need a neon light indicator?
A: The red neon indicator alerts you when the circuit is receiving active power, preventing accidental power drain when the aircond is off.
Q3: What horsepower (HP) air conditioner can a 20A switch handle?
A: A 20A 250V switch handles single-phase residential air conditioners up to 2.5 HP without tripping or overheating.
Q4: Why is a double pole (DP) switch safer than a single pole switch?
A: Double pole switches disconnect both Live and Neutral wires simultaneously, offering total electrical isolation from lightning strikes or current leaks.
Q5:How do I install the UMS 9 Series 20A DP switch?
A: Turn off the main circuit breaker first. Connect the Incoming Live & Neutral supply wires to the IN terminals, and Output Live & Neutral wires to the OUT terminals.
Q6: Does UMS 9120N-AC fit standard concealed wall boxes in Malaysia?
A: Yes, it follows the standard 86mm x 86mm square faceplate dimension used in Malaysian home wiring systems.
Q7: Where can I buy original UMS 9 Series switches online in Malaysia?
A: You can buy genuine SIRIM-certified UMS switches on Shopee or Lazada Malaysia.
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