TOMZN RCBO TOB1L-63H 2P 63A 230V AC 50Hz/60Hz Residual Current Circuit breaker with over current and Leakage protection RCBO

The TOMZN TOB1L-63H is a 2-pole RCBO, a residual current circuit breaker with over-current and leakage protection, listed for homes, offices and shops. According to the listing, it is designed to protect both the line and neutral wires. It suits Bangladeshi homeowners, small office managers and shop owners who want one DIN rail unit for MCB and RCD protection, once an electrician has confirmed the rating.

• Overview
• Key features
• Specifications
• How to use / set up
• Compatibility and what is in the box
• Who should buy it in Bangladesh
• Alternatives in our store
• Warranty and support
• Delivery, returns and ordering
• Frequently asked questions

TOMZN TOB1L-63H overview

The TOMZN TOB1L-63H combines two protective jobs in one DIN rail unit. According to the listing, it is a residual current circuit breaker with over-current protection, which the maker calls the MCB function, and leakage protection, which it calls the RCD function. For a homeowner, the practical point is that one device covers an overload and an earth leakage fault on the circuit it serves. Compare the listing wording with a separate MCB and RCD pair before you decide.

The listing says this unit is designed to protect both line (L) and neutral (N) wires in residential and industrial electrical installations. That is why the cut-off row in the specifications matters. The listing states that the device cuts both L (Live) and N (Neutral) during a fault condition. The wider installation still needs correct wiring and grounding, as the listing notes, so talk through how the unit fits your board with a qualified electrician.

Before you buy, check that the 63A rating and 230V AC rated voltage suit your circuit. The listing also gives 50Hz / 60Hz as the frequency and a residual operating current of 30mA (typical). Start with the rating when you check it against your supply and the load on the circuit. An electrician should make the final call on the rating for your load.

Key features

The points below follow the maker’s wording for the TOMZN TOB1L-63H where possible, and each claim is attributed to the listing.

Combined MCB and RCD function

According to the listing, the TOMZN TOB1L-63H is an RCBO that combines the functionality of an MCB and an RCD in one compact unit. The over-current side covers overloads, and the leakage side responds to residual current, which the listing calls leakage protection. The listing does not explain how the two functions are set, so ask us if that matters for your installation.

If you are comparing this unit with a separate MCB and RCD pair, lay out both options with an electrician. Write down the circuit, the connected appliances and the rating you expect, then ask which option fits the board. Share the model name so the advice refers to the right unit.

Double-pole cut-off on L and N

The listing states that the TOMZN TOB1L-63H cuts both L (Live) and N (Neutral) during a fault condition. The maker describes this as a double-pole cut-off and says it enhances safety by disconnecting both lines during faults. The listing places the unit in residential, commercial and light industrial usage.

Because the cut-off covers both lines, ask your electrician how it works with the other devices on the board. Give them the model name, TOMZN TOB1L-63H, so they can pull the right details. Mention the rated voltage of 230V AC and the frequency of 50Hz / 60Hz as well.

Quick trip response

The listing says the TOMZN TOB1L-63H responds rapidly to a ground fault or an overload. It does not give a trip time, so this page does not quote one. What the listing does give is a Type C tripping characteristic, described as standard usage that handles moderate inrush currents. The maker’s wording is the only source for this description.

If your load has a large starting surge, check the rating with an electrician before you order this unit. Matching the rating to the load is the step that matters most, so list the appliances on the circuit before you speak to anyone about it. Air conditioners and geysers are the two loads the listing names, so start there.

Compact DIN rail design

The listing describes the TOMZN TOB1L-63H as a compact DIN rail design that is easy to install inside distribution boards. Mounting is listed as DIN rail 35mm (standard). Before you buy, measure the rail in your board and confirm it matches the standard listed. The listing does not describe any other rail size, so treat 35mm as the check point.

Plan the layout of the board around the unit, and review the space with your electrician before any work starts on a live supply. Ask whether the rail in your board matches the 35mm standard. Keep a note of the existing devices so the new unit can be placed correctly.

Fire and shock protection

The listing says the TOMZN TOB1L-63H provides added protection against electrical fires and electrocution. It also lists high sensitivity, with leakage detection as low as 30mA. These are the maker’s claims as published on the listing.

A protective device is one part of a safe installation, so keep the wiring, earthing and board in good order. Treat any sign of heat, scorching or damage on the board as a reason to call an electrician. Do not keep resetting a unit that trips repeatedly, because repeated trips point to a fault that needs checking.

Rated current and voltage

The listing gives a rated current of 63A, a rated voltage of 230V AC and a frequency of 50Hz / 60Hz for the TOMZN TOB1L-63H. Match these figures against your circuit and the load you plan to connect. An electrician who knows the wiring should choose the rating, not a general guide.

The listing also gives use-case examples: household circuits, air conditioner or geyser lines, solar inverter AC output, small office boards and shops. Use these as prompts for a conversation with your electrician rather than as a sizing rule.

Specifications

The table below sets out the specifications for the TOMZN TOB1L-63H as they appear in the product listing. Read each row against your board and your load before you decide.

These are listed specifications from the product listing.

How to use / set up

Installing this unit is a job for a qualified electrician. The listing recommends installation by a qualified electrician and stresses correct wiring and grounding. If you are a homeowner, book a visit rather than attempting the work yourself, especially on a live board. Ask the electrician to confirm the rating, the rail and the connections before the supply is restored.

Follow the maker’s instructions for mounting on a 35mm DIN rail, and switch off the supply at the main before any work begins. Check that the rated current of 63A, the voltage of 230V AC and the frequency of 50Hz / 60Hz match your circuit. Connect the TOMZN TOB1L-63H only once the rating is confirmed and the earthing is correct.

Keep the area around the board clean and dry, and leave space so heat can escape. Inspect the board from time to time for discolouration, warm connections or loose wires. If you notice any of these, switch off and call an electrician rather than resetting the unit repeatedly. Keep a labelled note of the circuit each device protects so the next person knows what it covers.

The TOMZN TOB1L-63H is a fixed board item rather than a portable device, so setup is an installation task for a professional rather than a sequence to follow on your own. Once installed, it works as the listing describes: as a combined over-current and leakage device for the circuit it protects.

Power cuts and generator changeovers can change the load on a circuit. If you add a generator supply to the TOMZN TOB1L-63H circuit, or add a new air conditioner or another heavy appliance, ask your electrician to review the rating before you use the new load. Humidity in Dhaka can also affect electrical boards, so check the enclosure for condensation during the monsoon and call an electrician about any damp patch.

Compatibility and what is in the box

The listing confirms that the TOMZN TOB1L-63H is a 2P device with a rated voltage of 230V AC, a frequency of 50Hz / 60Hz and DIN rail 35mm mounting. It is listed for residential, commercial and light industrial usage. Check each of these points against your board before you order.

The listing describes the TOMZN TOB1L-63H as a circuit breaker for the distribution board, so it is not a plug, a wall switch or a power strip. Those items appear in our range as separate products, listed in the alternatives section below. The listing does not describe it as a socket outlet.

What is in the box: the listing does not state the package contents, so what comes with the TOMZN TOB1L-63H is not confirmed. Ask us before ordering if you need to know whether fixings, leads or manuals are supplied. Please do not assume anything beyond the unit described on this page.

Not confirmed by the listing: the wire size, terminal details and any accessories. Before you buy, note the number of ways on your board, the rail type and the existing devices, and share that list with your electrician.

Who should buy it in Bangladesh

The TOMZN TOB1L-63H suits buyers who need a combined over-current and leakage device for a defined circuit, and who have an electrician to confirm the rating. It is a technical component rather than a general gadget, so it works best for people who understand what they are protecting.

A homeowner might consider the TOMZN TOB1L-63H for one circuit that serves an air conditioner or a geyser line. The listing names both as use cases, so these match the maker’s description most closely. Think about how many appliances share that circuit and how much load they draw together.

Owners of a solar inverter may look at this unit for the AC output side, because the listing names solar inverter AC output protection as a use case. Check the inverter’s own requirements and confirm the rating with your installer. The listing describes the device for AC use at 230V and does not describe it for DC circuits.

A small office with a distribution board serving a few workstations may find the device suits the board if the load matches the 63A rating. Office managers should ask an electrician to map which sockets and lights sit on each circuit before choosing the unit.

Shop owners and light commercial spaces are the other listed scenarios for the TOMZN TOB1L-63H. A counter display, lighting and a small refrigerator on one board may need review, so ask your electrician to total the load first. The listing covers residential, commercial and light industrial usage, which matches this kind of setting.

A flat owner in a Dhaka apartment block should check with building management before any board work. Shared risers and common panels are often outside the tenant’s control, so a purchase of this unit is usually a question for the building’s electrician rather than a personal decision.

Buyers who need a different voltage or frequency, or who cannot confirm a 35mm DIN rail in their board, should look elsewhere. Buyers who only need a plug or a socket for one appliance will find this unit is the wrong type of product for that job.

Anyone who plans to fit the unit without professional help should reconsider. The listing recommends installation by a qualified electrician, and that advice applies to every buyer in Bangladesh.

Alternatives in our store

If the TOMZN TOB1L-63H does not match your circuit or your plans, you can browse other items in our range. Each item below is described by its category only, so open its product page for details. SONOFF WiFi Smart Wall Touch Switch T3 UK 3 Gang- Compatible With Alexa, Google Assistant – Black Color is another smart wall switch in our range.

LDNIO Z4 Universal Plug 6A Max (ABS V0) is another plug in our range. TOMZN TOB7Z-63 2P DC Circuit Breaker – 10A, 20A, 32A Solar PV MCB, 12V–1000V Wide Range DC MCB for PV System is another circuit breaker in our electrical range. Deli CT705ES 3 Pin 6 Port 3 Meter Power Strip With Surge Protection is a power strip in our electrical range. You can browse the whole category here: Smart Switches and Electrical.

For general background on smart plugs, see the Wikipedia overview of smart plugs.

Warranty and support

Warranty: 7 Days seller warranty.

Delivery, returns and ordering

The store policy below applies to every order, including this unit.

We deliver all over Bangladesh and you pay cash on delivery. Delivery usually takes 1–3 days inside Dhaka city and 2–5 days outside Dhaka.

You can return it within 7 days of delivery (see our Delivery and Returns policy). Read the policy page for the full steps before you place your order for this unit.

Questions before ordering: call 09638054751, message us on Facebook Messenger or email care@gadgetsuperb.com.

Policy page: https://gadgetsuperb.com/delivery-returns/

Ask us a question before you order if any row in the specifications is unclear.

Frequently asked questions

What is the TOMZN TOB1L-63H?

According to the listing, the TOMZN TOB1L-63H is a 2-pole residual current circuit breaker with over-current and leakage protection. It is designed to protect both the line and neutral wires in residential and industrial installations.

Is the TOMZN TOB1L-63H rated for 63A?

The listing gives a rated current of 63A and a rated voltage of 230V AC for the TOMZN TOB1L-63H. Check that these figures suit your circuit and the load you plan to connect.

Does it cut both live and neutral?

Yes, the TOMZN TOB1L-63H is listed as cutting both L (Live) and N (Neutral) during a fault condition.

What frequency is the TOMZN TOB1L-63H listed for?

The listing gives 50Hz / 60Hz as the frequency. Match this against the supply on your own circuit.

Is the TOMZN TOB1L-63H mounted on a DIN rail?

The listing gives DIN rail 35mm (standard) as the mounting for the TOMZN TOB1L-63H. Confirm that your distribution board uses this rail type.

Can it protect an air conditioner circuit?

The listing names air conditioner or geyser line protection as a use case for the device. Ask your electrician how the rating fits the appliance’s load.

What residual operating current does the listing give?

The listing gives a residual operating current of 30mA (typical, adjustable in some models) for the TOMZN TOB1L-63H.

Does the listing include a warranty?

Warranty: 7 Days seller warranty.

Can I return it if it does not suit my board?

Yes, you can return it within 7 days of delivery, as set out in our Delivery and Returns policy. Read the policy page for the full steps.

Should I install it myself?

No. The listing recommends installation by a qualified electrician.

How do I contact you before ordering?

Call 09638054751, message us on Facebook Messenger or email care@gadgetsuperb.com.