UMS 3120 20A 1 Gang 1 Way Double Pole Switch
The UMS 3 Series 20A 1 Gang 1 Way Double Pole (DP) Switch (Model 3120) is a SIRIM-approved, heavy-duty electrical switch manufactured by United MS Electrical Mfg (M) Sdn Bhd. Specifically built for high-power household appliances such as water heaters and air conditioners, it disconnects both live and neutral wires simultaneously to prevent electrical surges, short circuits, and electric shocks. Designed with durable flame-retardant polycarbonate housing and compliant with MS IEC 60669-1 standards, the UMS 3120 is the go-to standard for Malaysian residential homes, commercial offices, and industrial setups.
Full Description:
Superior Electrical Safety with Double Pole Protection
When it comes to powering heavy-load home electronics, standard single-pole switches are insufficient. The UMS 3 Series 20A 1 Gang 1 Way DP Switch (3120) features a high-grade Double Pole (DP) mechanism that breaks both the active live line and the neutral line in a single operation. This complete physical separation guarantees zero lingering voltage, drastically reducing the risk of electrical leakage, short circuits, and damaged appliance circuitry. Whether installed in humid master bathrooms or high-usage living rooms, this switch guarantees top-tier safety for your family and property.
Built for High-Load Malaysian Appliances
Designed to handle a high load rating of 20 Amperes (20A 250V AC), the UMS 3120 model is optimized specifically for home appliances demanding continuous power:
- Instant & Storage Water Heaters: Prevents overheating and insulates against dangerous moisture-induced current leaks.
- Air Conditioners (up to 2.5 HP / 20A rating): Handles initial motor inrush currents easily without burning out contact points.
- Commercial Equipment: Dependable power control for office glass doors, exhaust fans, and water dispensers.
- Induction Cookers & Electric Ovens: Safe wall power isolation for heavy kitchen appliances.
Sleek, Ergonomic, & Long-Lasting Design
Part of the signature UMS 3 Series, the model 3120 sports a timeless glossy white finish that seamlessly blends into contemporary Malaysian interior designs.
- Impact-Resistant Polycarbonate: Made with high-impact, fire-retardant plastic casing that resists yellowing over years of UV exposure.
- Standard 86mm x 86mm Dimensions: Fits all standard 3x3 PVC surface nut boxes and concealed metal backboxes across Malaysia
- Smooth Switch Action: Features high-grade silver-alloy contacts inside, tested for tens of thousands of mechanical switching cycles without contact sticking.
Easy Installation & Universal Compatibility
Upgrading your existing wall switches is straightforward. The clear rear terminal markings ensure intuitive wiring for live, neutral, and earth connections. Perfect for direct replacement of aging water heater switches or new wiring installations in modern BTOs, landed houses, and commercial lots.
Q1: What is the difference between a single pole switch and the UMS 20A double pole switch 3120?
A: A single pole switch cuts off only the live wire, while the UMS 20A Double Pole Switch (3120) disconnects both live and neutral wires simultaneously. This offers full electrical isolation, which is critical for high-load appliances like water heaters and air conditioners to prevent electric shock and short circuits.
Q2: Is the UMS 3 Series 3120 20A switch suitable for water heaters in Malaysia?
A: Yes. The UMS 3120 DP switch is rated at 20A 250V AC and is specifically engineered to handle the electrical loads of instant and storage water heaters commonly installed in Malaysian homes.
Q3: Can I use the UMS 3120 20A switch for air conditioners?
A: Yes. The UMS 3120 is suitable for air conditioners rated up to 20 Amperes (typically up to 2.5 HP models). Its double pole design handles high startup currents safely without burning out switch contacts.
Q4: Why does a water heater require a 20A double pole switch instead of a 13A socket?
A: Water heaters consume high continuous wattage (often 2000W to 3600W+), which exceeds the 13A plug capacity and can cause standard plugs to melt or trigger circuit breakers. A dedicated 20A DP switch hardwires the appliance safely.
Q5: What brand produces the UMS 3120 switch?
A: The UMS 3120 is manufactured by United MS Electrical Mfg (M) Sdn Bhd, a trusted Malaysian electrical product manufacturer under the UMS-Neiken Group.
Q6: Does the UMS 3 Series 3120 switch resist fire and heat?
A: Yes. The UMS 3120 casing is constructed from high-grade, flame-retardant polycarbonate plastic designed to withstand high operational temperatures.
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