Is this a trailing edge dimmer switch please, for dimmable LEDs?

The info states: "COMPATIBLE WITH LED ...... LAMPS: Thanks to the intelligent trailing edge dimmers having a lower minimum load than leading edge dimmers." This implies to me that it is a trailing edge dimmer. However, the top left of the same page states that it is a leading edge dimmer, as does the 'specifications' pdf. This also states that the dimmer unit will emit a faint buzz. Clicking on the link to the 'user manual'' pdf takes me to Swordfish Paper Trimmers.

Can you still uses this as a 1 gang 1 way switch for bedroom

I would suggest using a different switch BG NBS12 which is a 1 gang 2 way but you can use it as a 1 gang 1 way switch too.

can you use these switches for 1 way as well as 2 way

I have just wired this four gang two way switch for one way operation, the wiring advice states live to common terminal and switched live to L1 terminal however this causes the lights to come on with the switches in the off position and be off in the on position. A continuity test showed that terminal L2 was acting as L! and L1 was acting as L2, so I used L2 for switched live and all is well in the kitchen! Hope this helps.

What depth back box do I need for this?

It says 35mm on the technical specs.

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BG Electrical Switched Fused Connection Unit with Neon Indicator and Cable Outlet

Product ID: 51352567

Details

Brand
British
Connector type
Screws
Contact type
Normally Open
Current rating
13 Amps
Item dimensions L x W x H
8.6 x 8.6 x
Material
Metal

⚡13A double pole switching

💡LED neon power indicator

🔧Angled captive screw terminals

Bs.553

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Description

⚡ Power up your workspace with sleek safety and style!

BUILT TO LAST - Fixed integrated gasket protects against moisture with a 25-year spare parts guarantee.
INSTANT POWER STATUS - Bright LED neon indicator keeps you informed at a glance.
INSTALLATION MADE SIMPLE - Angled colour-coded captive screws speed up wiring and retrofit projects.
MODERN MINIMALIST DESIGN - Sleek brushed steel with softly rounded corners elevates any professional space.
EFFORTLESS SAFETY CONTROL - Double pole switching ensures complete power isolation for peace of mind.

The BG Electrical Switched Fused Connection Unit combines robust 13A double pole switching with a modern brushed steel finish and an LED neon indicator for clear power status. Designed for easy installation with angled captive screw terminals and moisture protection, it meets BS 1363 Part 4 safety standards and comes with a 25-year spare parts availability, making it the smart choice for professional-grade electrical setups.

Specifications

ASIN	B007CVCTQS
Actuator Type	Hinge Lever
Best Sellers Rank	19,867 in DIY & Tools ( See Top 100 in DIY & Tools ) 200 in Switches & Dimmers
Brand	British General
Circuit Type	1-way
Colour	Brushed Steel
Compatible Devices	TVs
Connectivity Protocol	Wi-Fi
Connector Type	Screws
Contact Material	Metal
Contact Type	Normally Open
Control Method	Touch
Control Type	ON-OFF
Country Of Origin	China
Current Rating	13 Amps
Customer Reviews	4.6 4.6 out of 5 stars (202)
EU Spare Part Availability Duration	25 Years
Global Trade Identification Number	05050765018975
Included Components	Cable
International Protection Rating	IP54
Item Dimensions	8.6 x 8.6 x 0.1 centimetres
Manufacturer	Nexus (Jiaxing)
Manufacturer Part Number	NBS53-01
Material	Metal
Model Number	NBS53-01
Mounting Type	Panel Mount
Number of Items	1
Number of Positions	1
Operating Voltage	230 Volts
Operation Mode	ON-OFF
Product Warranty	2 year manufacturer
Specification Met	BS 5733 and BS EN 60930
Switch Type	Touch switch
Terminal	Screw
Unit Count	1.0 count
Wattage	3250 watts

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Bs.553

Duties & taxes included

In stock

Sold byAmazon BoliviaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Bolivia.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Anjali K.

The product quality is outstanding. Exactly what I needed for my work.

1 month ago

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Excellent communication throughout the order process. Product is perfect.

2 weeks ago

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