BS88 FUSE

What Is BS88 Fuse

BS88 fuses generally feature mounting tags with through-holes or a forked design to allow them to be bolted into an electrical system. BS88 fuses can differ by fuse speed, voltage, breaking capacity, amperage rating, physical size and the orientation of their tags.
Every electric circuit within an industrial application will be protected by a fuse. A BS88 fuse contains a sacrificial link that breaks during an overload or short circuit scenario to protect the rest of the electrical system. BS88 fuses are used in low voltage industrial and general-purpose applications and meet the requirements of BS88 and IEC60269.

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Founded in 1988, Chifeng Electric has evolved to be a competitive fuse brand in China with well-established and growing platforms in circuit protection technologies. We offer the industry's broad portfolio of fuse products, and We focus on solar markets while expanding into adjacent renewable energy markets as part of our corporate strategy of diversity growth.

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Rich experience

Founded in 1988, Chifeng Electric has evolved to be a competitive fuse brand in China with well-established and growing platforms in circuit protection technologies.

Complete range of products

Photovoltaic Fuses, ESS Fuses, High speed Fuses, Semiconductor Fuses, IEC Fuses, UL Fuses.

Advanced equipment

Electrical characteristics testing machines, Environmental tolerance test machines, Automatic fuse element stamping machines, Automatic fuse assemble machines, Automatic printing machine etc.

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5000 square meters workshop, 100 professional employees and 30 years of innovation and unwavering commitment to customer service enable us to provide objective, comprehensive, and personalized customer solutions for circuit protection.

What Are the Different BS88 Fuse Types

BS 88 and its various parts have been integrated into the (IEC/BS EN/BS HD) 60269 series of standards, there are many types and ratings of these fuses.
BS 88 and its various parts have been integrated into the (IEC/BS EN/BS HD) 60269 series of standards, there are many types and ratings of these fuses. However, the main types may be summarized as:
BS 88-2 = industrial, (BS HD 60269-2)
BS 88-3 = domestic, (BS HD 60269-2)
88-4 = fast fuses (protection of semiconductor devices e.g. motor drives, etc).

Maximum Zs Values and Fuse Standards: BS88 Fuse

Amendment 1 of BS 7671:2008 contains some important changes concerning new fuse standards which took effect in March 2010. These changes can be seen in the maximum earth fault loop impedance (Zs) values in Tables 41.2 and 41.4. The new fuse standards are:
BS 88-2 which has replaced BS 88-2.2 and BS 88-6.
BS 88-3 which has replaced BS 1361.
● The formula
The maximum earth loop impedance, Zs values are arrived at using the formula in Regulation 411.4.5:
Zs x Ia = Uo
● Where
Zs = the earth fault loop impedance in ohms
Ia = the current in amps which causes the protective device to operate within the time specified in Table 41.1 (or, if appropriate, within the 5 second disconnection time specified in Regulation 411.3.2.3 for TN systems).
Where an RCD is used, the current Ia is the rated residual operating current which provides disconnection within the time specified in Table 41.1 (or, if appropriate, within the 5 second disconnection time specified in Regulation 411.3.2.3 for TN systems).
U0 = the nominal voltage to Earth in volts (ie. 230 V for standard a.c. single-phase and three-phase circuits).

Marking Description of BS88 Fuse

First Letter (lower case)

The first, lower-case letter indicates the breaking range of the fuse.
"G" stands for full-range breaking capacity, meaning that the fuse is capable of breaking all overcurrents from its minimum melting current up to its breaking capacity. These fuses can protect from overloads and short circuits. Full-range breaking capacity fuses can be used as sole protective devices.
"A" stands for partial-range breaking capacity, meaning that the fuse is capable of only breaking high currents of a multiple of its rated current. Partial-range breaking capacity fuses are designed for short-circuit protection only, and are therefore used in combination with other devices providing protection against overcurrents. They are also frequently used for back-up protection of other switching devices having a lower breaking capacity (e.g. contactors or circuit breakers).

Second Letter (upper case)

The second, upper-case letter indicates the characteristic. These are related to the intended application. For example, 'G' relates to general applications (cable & line protection), 'M' relates to motor circuits, 'R' relates to rectifier or semiconductor protection and 'B' relates to mining applications. Sometimes, this part can be expressed with two letters such as 'PV' (Photovoltaic protection) or 'Tr' (Transformer protection).

Criteria for Selecting the Right BS88 Fuse: Comprehensive Guidelines

Selecting the right BS88 fuse is critical in electrical system design and maintenance. It's not just about choosing a fuse of the right size or type, several key factors must be considered to ensure optimal protection and functionality.

Understanding the electrical load

The first step in selecting an appropriate BS88 fuse is understanding the electrical load it is meant to protect. This involves two key aspects:
● Normal operating current: The regular current flows through the circuit during typical operation. The selected fuse must be able to carry this current continuously without blowing.
● Potential fault current: This refers to the maximum current that could flow through the circuit in the event of a fault. The fuse must be able to interrupt this current promptly to prevent damage to the circuit or equipment.
Understanding these parameters ensures that the chosen fuse will operate effectively under normal conditions and respond correctly during fault conditions.

Fuse rating: Matching the circuit

The rating of the fuse is perhaps the most critical factor in its selection:
● Ampere rating: The fuse's ampere rating should closely match the circuit's requirements. A fuse with too high a rating may not blow in case of a minor fault, leading to potential damage. Conversely, a fuse with too low a rating will blow unnecessarily, causing inconvenience and possible downtime.
● Voltage rating: The voltage rating of the fuse must be equal to or greater than the circuit's voltage. This ensures that the fuse can effectively interrupt the circuit under fault conditions.
● Breaking capacity: This is the maximum fault current the fuse can safely interrupt. The breaking capacity of the fuse must be higher than the potential maximum fault current of the circuit.

Physical size and compatibility

Physical compatibility is essential for safety and functionality:
● Size and shape: The physical dimensions of the fuse must fit the holder or socket. An improperly sized fuse can lead to poor electrical contact and potential hazards.
● Type: Different circuits and applications may require different fuses. Ensuring the correct type of fuse is used is crucial for proper operation.

Environmental conditions

The operating environment can significantly impact fuse performance:
● Temperature: Fuses can be sensitive to temperature variations. Extreme temperatures can affect the fuse's ability to operate correctly.
● Humidity and moisture: High humidity or exposure to moisture can lead to corrosion or other damages to the fuse, impacting its performance.
● Chemicals and contaminants: In industrial environments, exposure to chemicals or other contaminants can affect the fuse's materials, leading to degradation or failure.
● Vibration and movement: Fuses must withstand vibration and movement without losing contact or breaking, especially in automotive or industrial applications.

How Come BS88 fuses Blow

BS88 fuses may blow for several causes, including:
When a high-volume current travels via a low-resistance electrical route, a short circuit is created. Electric cables can be pierced by a nail or screw, allowing water to enter the input jack and resulting in a short circuit. They can burn metal, start fires in arches, harm wire insulation, and evaporate conductors since they are a thousand times stronger than the average current.
The electric BS88 fuse blows due to a ground fault that occurs when a charged hot wire meets something grounded, such as a metal pipe, power box, your palm, bare neutral wire, or an outlet.
The circuit may open and the BS88 fuse may blow because of an electric overload that's also six times the average current flow. When there are too many devices plugged into one circuit, overloads typically occur.

Features of Bs88 Fuse

The BS88 fuse has the following features:
● They have high speed of operation.
● They do not require maintenance.
● They do not deteriorate with age.
● They are cheaper as compared to other circuit interrupting devices of equal breaking capacity.
● They are capable of clearing high as well as low fault currents very efficiently.
● They are capable of providing reliable discrimination.
● They permit consistent performance.

Current Rating or the Current Capacity of BS88 Fuse

Current rating or the current capacity of BS88 fuse defines the maximum amount of current a fuse can hold without blowing or melting. This is usually mentioned in amperes i.e. 2A, 4A, 600A etc.

Voltage rating of BS88 fuse

Along with current rating, a BS88 fuse will also be specified with the maximum voltage it can be supplied with.

I2T (ampere squared seconds)

I2T value of a BS88 fuse measures the heat energy in the BS88 fuse. This heat energy is due to current flow and also the arc produced when the BS88 fuse is blown.

Breaking capacity of BS88 fuse

Breaking capacity of the BS88 fuse is also known as the interrupting rating or short circuit rating. Breaking capacity will specify the maximum safe current that the BS88 fuse can interrupt at a voltage less than the maximum rated voltage.

Working Principle of BS88 Fuses

BS88 fuse is a vital safety component in electrical systems that functions as a sacrificial device to protect against overcurrents. It consists of a metal wire or strip with a low melting point, enclosed in a non-conductive housing. When the current flowing through the wire exceeds the BS88 fuse's rated capacity, the wire's temperature increases, causing it to melt and break the circuit. This interruption of current flow prevents potential damage to the electrical system and its components.

How Do You Replace BS88 Fuse

Replacing BS88 fuse is typically a relatively simple process, but care must be taken to ensure safety.
● Turn off the power.

● Locate the BS88 fuse holder or BS88 fuse box.

● Remove the old BS88 fuse from the BS88 fuse holder. This is usually done by grasping the BS88 fuse and pulling it straight out.

● Inspect the BS88 fuse element visually to determine if the BS88 fuse is blown. Sometimes this determination cannot be made visually and other testing devices (such as a multimeter) must be used.

● Choose a replacement BS88 fuse with the appropriate current and voltage rating for the application.

● Insert the new BS88 fuse into the BS88 fuse holder, making sure it is secure and with the metal ends are making good contact.

● Turn the power back on to the circuit and test the electrical system.

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FAQ

Q: What is the difference between BS88 and BS1361?

A: BS 88 fuses mainly for commercial and industrial use, can handle up to 80 KA. 1000 V ac, and 1500 V dc. BS 1361 fuses mainly for domestic use,and will have a much lower breaking capacity.

Q: How do you replace BS88 fuse?

A: Replacing BS88 fuse is typically a relatively simple process, but care must be taken to ensure safety.
● Turn off the power.
● Locate the BS88 fuse holder or BS88 fuse box.
● Remove the old BS88 fuse from the BS88 fuse holder. This is usually done by grasping the BS88 fuse and pulling it straight out.
● Inspect the BS88 fuse element visually to determine if the BS88 fuse is blown. Sometimes this determination cannot be made visually and other testing devices (such as a multimeter) must be used.

Q: What is the voltage rating of the BS88?

A: The standardised values of breaking capacity are 80kA for voltages of 415V a.c. and above, and 40kA for d.c. applications.

Q: What is BS88 fuse?

A: BS88 fuses generally feature mounting tags with through-holes or a forked design to allow them to be bolted into an electrical system. BS88 fuses can differ by fuse speed, voltage, breaking capacity, amperage rating, physical size and the orientation of their tags.
Every electric circuit within an industrial application will be protected by a fuse. A BS88 fuse contains a sacrificial link that breaks during an overload or short circuit scenario to protect the rest of the electrical system. BS88 fuses are used in low voltage industrial and general-purpose applications and meet the requirements of BS88 and IEC60269.

Q: What are the different BS 88 fuse types?

A: BS 88 and its various parts have been integrated into the (IEC/BS EN/BS HD) 60269 series of standards, there are many types and ratings of these fuses.
BS 88 and its various parts have been integrated into the (IEC/BS EN/BS HD) 60269 series of standards, there are many types and ratings of these fuses. However, the main types may be summarized as:
BS 88-2 = industrial, (BS HD 60269-2)
BS 88-3 = domestic, (BS HD 60269-2)
88-4 = fast fuses (protection of semiconductor devices e.g. motor drives, etc).

Q: What is the short circuit capacity of BS88 fuse?

A: High-performance. - High breaking capacity 120 kA at 500 V, 80 kA at 690 V. - High short-circuit limitation capacity.

Q: Where are BS88 fuses used?

A: A BS88 fuse contains a sacrificial link that breaks during an overload or short circuit scenario to protect the rest of the electrical system. BS88 fuses are used in low voltage industrial and general-purpose applications and meet the requirements of BS88 and IEC60269.

Q: What is the characteristic of BS88 fuse?

A: This fuse range insures an excellent current limi- tation for all overloads on a large range of appli- cations. Their size cannot allow exchange by other fuses of higher rating in their range. They are screwed into fuseholders or bolted directly onto busbars, or in fuse interruptors dis- connectors.

Q: What is the breaking capacity of BS88 32A?

A: 32A NS fuse. With a breaking capacity of 80 kA and voltage of 550V.

Q: What is the maximum Zs value for BS88 fuses?

A: Zs = 2.04 ohms. As the required disconnection time is 0.4 seconds, we turn to Table 41.2(b). Here we find that the maximum Zs value for 20 A BS 88-3 fuses is 2.04 ohms.

Q: What is BS88 2 1988?

A: BS 88-2-2:1988 Cartridge fuses for voltages up to and including 1000 V a.c. and 1500 V d.c. Specification for fuses for use by authorised persons (mainly for industrial application). Additional requirements for fuses with fuse-links for bolted connections (AMD 6697) (AMD 7953) (AMD 8311).

Q: What type is a BS88 3 fuse?

A: These 100 Amp / 100A MF100 / MF100A BS88-3 (BS1361) type 2b house service cut-out main fuses are used to protect an entire house. We also keep the thinner ME100 fuses. Dimensions : 57mm long x 30.16mm diameter.

Q: How does BS 88 fuse operate?

A: BS 88 units with right front-side operation are manually-operated multipole fuse load break switches. They provide make and break on load and safety isolation and protection against overcurrent for any low voltage electrical circuit.

Q: What is the maximum fuse interrupting rating of a Class BS88 R fuse?

A: Class R ("R" for rejection) fuses are high performance, 1⁄10 to 600A units, 250V and 600V, having a high degree of current-limitation and a short-circuit interrupting rating of up to 300,000A (RMS symmetrical).

Q: How come BS88 fuses blow?

A: BS88 fuses may blow for several causes, including:
When a high-volume current travels via a low-resistance electrical route, a short circuit is created. Electric cables can be pierced by a nail or screw, allowing water to enter the input jack and resulting in a short circuit. They can burn metal, start fires in arches, harm wire insulation, and evaporate conductors since they are a thousand times stronger than the average current.

Q: How does BS88 fuse protect a circuit?

A: When an electric circuit gets overloaded or short-circuited, due to low melting point, the fuse in the live wire gets heated up and melts which in turn produces a gap in the live wire, so the current cannot flow through it, hence further damage will be prevented and the appliances will be saved.

Q: What is BS 88 fuse used for?

A: BS 88 fuses are fundamental components in various applications, ranging from domestic to industrial settings. Their primary function is to protect electrical circuits by interrupting power in the event of an overload or short circuit.

Q: What happens if I use BS 88 fuse?

A: If a fuse is used with a voltage rating lower than the circuit voltage, arc suppression will be impaired and, under some overcurrent conditions, the fuse may not clear the overcurrent safely.

Q: What is the difference between BS 88 fuse and high voltage fuse?

A: A low voltage fuse is designed to protect the transformer's secondary winding, which is responsible for stepping down the voltage to a safe level for use in electrical systems. The low voltage fuse needs to have a lower breaking capacity than the high voltage fuse since it is connected to a lower voltage source.

Q: Can BS 88 fuse fall out?

A: If any of the fuses fall out or easily come loose then that may be a sign that the some of the panel's terminals may be damaged. A damaged terminal with a loose fuse may cause electrical problems such as sudden, intermittent power loss to certain accessories or lights.

Zhejiang Chifeng Electric Co., Ltd. is well-known as one of the leading bs88 fuse manufacturers and suppliers in China since 1988. If you're going to buy high quality bs88 fuse with low price, welcome to get pricelist from our factory. Customized orders are welcome.