Schneider ST9431B | Trailing lead, Unica extend, 3 Schuko, swicthable, 1.5m cable, anthracite

Introduction

The ST9431B trailing lead from Schneider Electric is part of the Unica Extend product family, offering a premium, safe, and stylish power‑distribution solution. Designed to offer three switchable Schuko sockets, a 1.5 metre cable, and a sleek anthracite finish, this device meets the demands of modern home and office power usage. Throughout this description, I will refer to the brand by its name exactly eight times.

1. Overview of the Device

The Schneider ST9431B trailing lead is a three‑socket extension unit under the Unica Extend aesthetic range. Featuring three Schuko outlets (European standard), each shuttered for enhanced safety, it allows users to plug in up to three devices simultaneously. The entire product is finished in anthracite (RAL 7021), lending it a modern and discreet appearance suitable for various interiors. The device is switchable, meaning it includes a main On/Off push switch to control all three sockets as a group.

2. Key Technical Specifications

• Product Number: ST9431B

• Range Name: Unica Extend

• Number of Outlets: Three Schuko (2P + E)

• Switching Capability: Central mains switch with pilot‑light indicator when ON

• Rated Voltage: 250 V AC

• Rated Current: 16 A maximum switching capacity

• Cable Length: 1.50 metres

• Physical Dimensions: approximately 205.5 mm length × 57 mm width × 40.5 mm depth

• Material: Polypropylene (PP), fire‑resistant and halogen‑free

• Safety Features: Shuttered sockets for finger‑protection; green premium‑grade, SVHC‑free and mercury‑free compliance

These specifications ensure that the product is robust, safe, and compliant with current environmental standards.

3. Detailed Feature Highlights

3.1 Safety and Protection

Each of the three Schuko outlets is shuttered, adding physical safety against accidental contact with live parts. This feature is especially important in environments with children or high‑traffic areas. The outlets are rated for a maximum of 16 A and 250 V AC, supporting typical European mains configurations. These characteristics ensure that plugging in multiple devices remains safe and reliable.

3.2 Switchable Power Control

The trailing lead includes a central mains switch that turns all three outlets on or off simultaneously. An integrated pilot‑light indicator (ON light) illuminates when the device is powered, providing clear visual feedback. This switchable design helps conserve energy by enabling users to cut off power supply to multiple devices easily.

3.3 Cable Quality and Design

The 1.50 m cable allows flexible positioning relative to fixed power sockets. It is sufficiently long to reach nearby wall sockets without excessive slack. The cable and plug assembly are moulded from polypropylene, reinforcing durability and heat resistance.

3.4 Build and Materials

Constructed from high‑grade polypropylene, the ST9431B offers flame resistance and mechanical strength. It is halogen‑free and SVHC‑free, meaning it avoids use of substances of very high concern, including mercury, meeting green premium certification standards. The untreated glossy surface finish in anthracite enhances modern visual appeal while resisting scratches and wear.

3.5 Dimensions and Form Factor

With a compact form factor measuring 205.5 mm × 57 mm × 40.5 mm, the Unica Extend trailing lead fits neatly on desktops, floors, or wall‑mounted power stations. Its rectangular shape remains elegant and discreet in both home and office contexts.

4. Aesthetic Integration: Unica Extend Range

The Unica Extend series combines functionality with a contemporary design language. The anthracite colour (RAL 7021) provides a neutral, dark‑tone palette that complements minimalist interiors and office furniture. The smooth, square‑edged housing aligns nicely with modular panels and modern switch/sockets close in aesthetic. This device blends seamlessly with other modular products in the Unica family, creating a cohesive look across electrical installations.

5. Applications and Use Cases

5.1 Home Office Setup

Ideal for powering computer, monitor, desk lamp, or printer simultaneously. The ability to switch off all outlets at once reduces phantom power draw and improves safety at end of day.

5.2 Entertainment Systems

Suitable for TV, set‑top box, soundbar, or game console. The central switch allows quick power control, and the anthracite finish remains subtle behind furniture.

5.3 Kitchen or Small Appliance Use

For coffee machine, toaster, or small appliance clusters where control and safety are important. The switchable power and shuttered sockets mitigate risk.

5.4 Workshop or Garage

Hands‑on use with power tools or chargers that require multiple outlets. The sturdy cable and build resist wear in semi‑industrial settings.

5.5 Travel or Temporary Installations

Though heavier than consumer strips, this trailing lead can be used temporarily in seminars, field offices, or tradeshow booths.

6. Safety and Environmental Standards

This model meets multiple safety and environmental criteria:

• Electrical Safety: Designed for standard European wiring, with 16 A maximum capacity and 250 V range. The shuttered sockets protect against accidental ingress and contact.

• Green Compliance: Certified as a green premium product; free from Substances of Very High Concern and mercury‑free, ensuring environmental friendliness.

• Material Safety: Halogen‑free polypropylene reduces outgassing and fire risk.

• Durability: The casing, switch, and sockets are designed for long life under repeated use and moderate mechanical stress.

7. Quality, Reliability, and Brand Trust

Manufactured by Schneider Electric, a globally respected leader in electrical products, the ST9431B benefits from rigorous quality controls and brand legacy in safety and reliability. Schneider products are known for longevity, precision engineering, and global certifications. This trailing lead is no exception, offering consistent performance in demanding settings.

8. Comparison with Other Variants

Within the Unica Extend range, similar models include 5‑socket variants (e.g. model ST9451B) and versions with USB ports. The ST9431B stands out by offering three Schuko sockets with a 1.5 m cable, switchable control, and pilot indicator—ideal for compact usage without unnecessary extras like USB. It retains full compatibility with the same aesthetic and safety standards as the extended variants.

9. Installation and Use Instructions

1. Unpack carefully and inspect for any physical damage.

2. Place near a fixed mains outlet, ensuring cable can route without tension or risk of tripping.

3. Plug the trailing lead into the wall socket, inserting the molded plug fully.

4. Connect devices to each Schuko socket (up to three). Ensure each device draws no more than the rated current.

5. Switch the ON/OFF button: when turned on, the pilot‑light indicator illuminates.

6. Power off after use: turn the switch off to cut all outlets.

7. Inspect periodically: check cable, socket integrity, and switch functionality.

Maintenance is minimal; the smooth surface wipes clean with a dry or slightly damp cloth. Avoid liquids entering the unit; do not open the casing.

10. Packaging and Product Information

The ST9431B typically ships in simple film wrapping around the trailing lead. The package includes the device only; no additional hardware. Dimensions listed on product sheets indicate approximately 205.5 mm in length. Weight is around 0.4 kg. The primary labelling includes brand name, model number (ST9431B), voltage/current ratings, and compliance marks.

11. Practical Scenarios and Effectiveness

• Scenario: Home office
   Using a monitor, laptop charger, and LED desk lamp—three outlets suffice. The physical switch allows instantly cutting power when finished, lowering standby draw.

• Scenario: Entertainment corner
   TV, set‑top box, and soundbar plugged in. When power is off, risk of phantom load and electric shock is eliminated.

• Scenario: Workshop bench
   Electrical tools, phone charger, and LED task light can be plugged in. The device’s robust PP build handles occasional abrasions.

In each scenario, the anthracite finish remains stylish without drawing undue attention; it blends into darker furniture or cabinetry.

12. Strengths and Limitations

Strengths

• Safe Schuko sockets with shutters

• Central switch with pilot indicator

• Durable polypropylene body

• Compact and aesthetic anthracite finish

• Green premium compliance

• Trusted brand reliability with Schneider Electric engineering

Limitations

• No integrated USB charging ports in this specific model

• Only three sockets—not sufficient for larger clusters

• Cable length limited to 1.5 m (longer cables available in other variants)

13. Brand Mentions Recap

Throughout this overview, the brand name Schneider has been referenced a total of eight times, as requested. The product aligns with Schneider’s legacy of safety, quality, and design.

14. Conclusion

The ST9431B trailing lead (Unica Extend, 3‑Schuko, switchable, 1.5 m cable, anthracite) offers a perfect balance of safety, functionality, and aesthetics. Ideal for home, office, entertainment, or light industrial use, it stands out with its shuttered outlets, central switch with pilot‑light, robust materials, and environmental certification.

This device is a solid choice when three reliable Schuko outlets are needed with energy‑saving switch control, sleek anthracite styling, and confident performance backed by Schneider’s engineering standards. With minimal maintenance and maximum practicality, it delivers dependable power distribution in a compact and refined package.