Eaton 110V/50 Hz, 27 A, 2 Hp At 115V, 7-1/2 Hp At 208, 240V, 10 Hp At 480V: Singapore Buyer's Guide

The Eaton 110V/50 Hz, 27 A, 2 Hp at 115V, 7-1/2 Hp at 208, 240V, 10 Hp at 480V is a three-phase motor starter rating: a 27 A device with a 110 V 50 Hz coil that controls motors up to 2 Hp at 115 V, 7-1/2 Hp at 208–240 V and 10 Hp at 480 V. In Singapore it is typically paired with 400 V three-phase supplies via a step-down control transformer.

What does "Eaton 110V/50 Hz, 27 A, 2 Hp At 115V, 7-1/2 Hp At 208, 240V, 10 Hp At 480V" actually mean?

A motor starter rating is the combination of current-carrying capacity, coil voltage and horsepower at each system voltage. Eaton publishes these as a single line so panel builders can match a starter to a motor without re-deriving the data.

The 27 A figure is the thermal current rating of the device. The 110 V / 50 Hz figure is the coil — the control voltage that energises the contactor. The horsepower figures (2 Hp at 115 V, 7-1/2 Hp at 208–240 V, 10 Hp at 480 V) are the maximum motor sizes Eaton lists for each supply voltage.

Quotable definition

A motor starter is an electromechanical assembly that switches a motor on and off while providing overload protection, combining a contactor with a thermal or electronic overload relay. Eaton rates starters by coil voltage, thermal current and horsepower at each system voltage, so a single part number can serve multiple supply voltages.

How does a 27 A starter work in a Singapore panel?

In a Singapore control panel, the starter coil is usually fed from a 400 V / 230 V control transformer that steps down to 110 V for the coil circuit. This keeps the operator interface at a lower, safer voltage while the main contacts switch the full motor current.

When the start pushbutton closes, the 110 V coil energises, the main contacts close, and the motor runs. The overload relay monitors current and trips the coil circuit if the motor draws excess current — protecting the motor from single-phasing, jam or overload.

Spec table

Which applications in Singapore use this rating?

Singapore's marine and offshore yards, precision manufacturing plants, F&B processing lines and pharmaceutical facilities all run three-phase motors in the 2–10 Hp band. A 27 A starter with a 110 V coil is a common choice where the panel is fed from a 400 V supply and the control circuit is stepped down.

Typical duties include conveyor drives, pump motors, fan and blower motors, compressor auxiliaries and machine-tool spindle drives. In humid tropical environments, specify IP-rated enclosures and corrosion-resistant terminals to protect against condensation and salt-laden air.

Selection criteria

1. Match the motor FLA. Confirm the motor's full-load amps against the 27 A thermal rating — do not size on horsepower alone.
2. Confirm coil voltage. The 110 V / 50 Hz coil must match your control transformer secondary. A 230 V coil will not energise on a 110 V circuit.
3. Check the supply voltage. Singapore's 400 V three-phase supply is closest to the 480 V column; verify the horsepower figure against your actual motor nameplate.
4. Select the overload range. Choose an overload relay whose setting range brackets the motor FLA, with adjustment headroom.
5. Consider the environment. For marine, offshore or washdown areas, specify IP65 or higher and corrosion-resistant terminals.
6. Verify SCCR. Confirm the short-circuit current rating against the upstream protection and the available fault current at the panel.
7. Plan for spares. Keep coil, contact kit and overload relay spares on hand — Singapore's fast delivery from local stock reduces downtime.

Product selection ladder

The table below compares Eaton control and automation accessories stocked by 3G Electric. These are the supporting components that sit alongside a motor starter in a Singapore panel — connectors, memory, software and HMI configuration tools.

Step up the ladder when your panel needs programmability (Easy E4 software and memory card) or an operator interface (XV100 software). Start with connectors when you are wiring existing Eaton Easy-E4 or Moeller components into a new or refurbished panel.

Why source from 3G Electric in Singapore?

3G Electric stocks 6 Eaton products in related categories and supplies across 14 industrial departments — far more than is listed online. With 35+ years of experience interpreting customer demand, we help Singapore buyers match the right Eaton accessory to their panel, confirm coil voltage and overload range, and get the part delivered fast from local stock.

Our specialist depth in combustion, pumps and controls means we understand the application behind the part number. Whether you are building a new panel in Jurong, retrofitting a line in Tuas, or maintaining an offshore asset, we source genuine Eaton components and provide technical support before and after the sale.

Key takeaways

• The Eaton 110V/50 Hz, 27 A, 2 Hp at 115V, 7-1/2 Hp at 208/240V, 10 Hp at 480V rating is a three-phase motor starter sized for 2–10 Hp motors.
• In Singapore, the 110 V coil is typically fed from a 400 V / 230 V control transformer.
• Match the 27 A thermal rating to the motor FLA, not just the horsepower.
• For humid or marine environments, specify IP65 or higher and corrosion-resistant terminals.
• 3G Electric stocks Eaton control accessories and delivers fast from Singapore.

Frequently asked questions

What is the Eaton 110V/50 Hz, 27 A, 2 Hp at 115V, 7-1/2 Hp at 208, 240V, 10 Hp at 480V used for?

It is a three-phase motor starter rating used to switch and protect motors up to 2 Hp at 115 V, 7-1/2 Hp at 208–240 V and 10 Hp at 480 V. In Singapore it is commonly used in conveyor, pump, fan and compressor applications fed from a 400 V three-phase supply.

Can I use this starter on Singapore's 400 V supply?

Yes, with care. Singapore's 400 V three-phase supply is closest to the 480 V column, so verify the motor nameplate FLA against the 27 A rating. The 110 V coil must be fed from a control transformer stepping down from 400 V or 230 V.

How do I choose between a 110 V and 230 V coil?

Match the coil to your control circuit voltage. A 110 V coil is common where a control transformer steps down from 400 V for operator safety. A 230 V coil suits panels where the control circuit is already at 230 V single-phase.

Where can I buy Eaton motor starters and accessories in Singapore?

3G Electric supplies genuine Eaton control and automation accessories from Singapore stock, with technical support to confirm coil voltage, overload range and enclosure rating. Contact us for a quote and fast local delivery.

What accessories do I need alongside an Eaton starter?

Typical accessories include connectors such as EATON Connector for Easy-E4 / Moeller and EATON Connector Set for Easy-E4, plus a EATON Memory Card for Easy E4 if the panel uses an Easy E4 control relay.

Does 3G Electric deliver Eaton parts across Singapore?

Yes. 3G Electric delivers Eaton control and automation parts across Singapore from local stock, supporting marine, offshore, precision manufacturing, F&B and pharmaceutical plants. Lead times are typically short for stocked items.

Contact 3G Electric

Need a quote, sizing help or technical support for the Eaton 110V/50 Hz, 27 A, 2 Hp at 115V, 7-1/2 Hp at 208, 240V, 10 Hp at 480V or any Eaton control accessory? Contact 3G Electric — we interpret your demand, source genuine Eaton equipment and deliver across Singapore.