Cart (0)
- No items in cart.
Total
$0
There is a technical issue about last added item. You can click "Report to us" button to let us know and we resolve the issue and return back to you or you can continue without last item via click to continue button.
Not a subscriber? Register for a trial account.
Already a subscriber? 
MADCAD.com Free Trial
Sign up for a 3 day free trial to explore the MADCAD.com interface, PLUS access the
2009 International Building Code to see how it all works.
If you like to setup a quick demo, let us know at support@madcad.com
or +1 800.798.9296 and we will be happy to schedule a webinar for you.
| Email * | |
| Password * | |
| Confirm * | |
| First Name * | |
| Last Name * | |
| Title | |
| Company Name * | |
| Company Size * | |
| Industry * | |
| Address * | |
| Address 2 | |
| City * | |
| State * |
Zip *
|
| Country * | |
| Phone * | |
| How did you hear about MADCAD.com? * |
|
Reset password
Enter your personal account email address to request
a password reset:
a password reset:
Reset password
Enter your account email address to request
a password reset:
a password reset:
Security check
Please login to your authorized staff account to use this feature.
Are you sure you want to empty the cart?
Report To Us
Contact us for a custom quote
⨯To continue with accurate pricing,
please select your company type below:
⨯We need your input!
Are you a code official in a jurisdiction with less than 300,000 population?
⨯ We need your input!
⨯We need your input!
Are you an existing Madcad user?
If so, please login to continue with the free items in your cart.
⨯We need your input!
This bundle includes subscribed items.
eLibrary >
BS EN IEC 60269-1:2025 - TC, BS 88-2:2025 Tracked Changes. Low-voltage fuses - General requirements >
BS EN IEC 60269-1:2025 - TC, BS 88-2:2025 Tracked Changes. Low-voltage fuses - General requirements, 2025
- A-30406105.pdf [Go to Page]
- undefined
- European foreword
- Endorsement notice
- Annex ZA (normative) Normative references to international publications with their corresponding European publications [Go to Page]
- English [Go to Page]
- CONTENTS
- FOREWORD
- 1 Scope
- 2 Normative references
- 3 Terms and definitions [Go to Page]
- 3.1 Fuses and their component parts
- 3.2 General terms
- 3.3 Characteristic quantities
- 4 Conditions for operation in service [Go to Page]
- 4.1 General
- 4.2 Ambient air temperature (Ta)
- 4.3 Altitude
- 4.4 Atmospheric conditions
- 4.5 Voltage
- 4.6 Current
- 4.7 Frequency, power factor and time constant [Go to Page]
- 4.7.1 Frequency
- 4.7.2 Power factor
- 4.7.3 Time constant (τ)
- 4.8 Conditions of installation
- 4.9 Utilization class
- 4.10 Selectivity of fuse-links
- 5 Classification
- 6 Characteristics of fuses [Go to Page]
- 6.1 Summary of characteristics [Go to Page]
- 6.1.1 General
- 6.1.2 Fuse-holders
- 6.1.3 Fuse-links
- 6.1.4 Complete fuses
- 6.2 Rated voltage
- Tables [Go to Page]
- Table 1 – Standard values of AC rated voltages for fuses
- Table 2 – Preferred values of DC rated voltages for fuses
- 6.3 Rated current [Go to Page]
- 6.3.1 Rated current of the fuse-link
- 6.3.2 Rated current of the fuse-holder
- 6.4 Rated frequency (see 7.1 and 7.2)
- 6.5 Rated power dissipation of a fuse-link and rated acceptable power dissipation of a fuse-holder.
- 6.6 Limits of time-current characteristics [Go to Page]
- 6.6.1 General
- 6.6.2 Time-current characteristics, time-current zones
- 6.6.3 Conventional times and currents
- 6.6.4 Gates
- Table 3 – Conventional time and current for "gG", and "gM" fuse-links
- 6.7 Breaking range and breaking capacity [Go to Page]
- 6.7.1 Breaking range and utilization category
- Table 4 – Gates for specified pre-arcing times of "gG" and "gM" fuse-linksa
- Table 5 – Gates for "aM ' fuse-links (all rated currents) [Go to Page]
- 6.7.2 Rated breaking capacity
- 6.8 Cut-off current and I2t characteristics [Go to Page]
- 6.8.1 General
- 6.8.2 Cut-off current characteristics
- 6.8.3 I2t characteristics
- 7 Markings [Go to Page]
- 7.1 General
- 7.2 Markings of fuse-holders
- 7.3 Markings of fuse-links
- 8 Standard conditions for construction [Go to Page]
- 8.1 Mechanical design [Go to Page]
- 8.1.1 Replacement of fuse-links
- 8.1.2 Connections, including terminals
- 8.1.3 Fuse-contacts
- 8.1.4 Construction of a gauge-piece
- 8.1.5 Mechanical strength of the fuse-link
- 8.2 Insulating properties and suitability for isolation
- 8.3 Temperature rise, power dissipation of the fuse-link and acceptable power dissipation of a fuse-holder
- 8.4 Operation
- Table 6 – Temperature rise limits ΔT = (T – Ta) for terminals
- 8.5 Breaking capacity
- 8.6 Cut-off current characteristic
- Table 7 – Maximum arc voltage
- 8.7 I2t characteristics
- 8.8 Overcurrent selectivity of fuse-links
- Table 8 – Pre-arcing I2t values at 0,01 s for "gG" and "gM" fuse-links
- 8.9 Protection against electric shock [Go to Page]
- 8.9.1 General
- 8.9.2 Clearances and creepage distances
- Table 9 – Rated impulse withstand voltage
- Table 10 – Minimum clearances in air [Go to Page]
- 8.9.3 Leakage currents of fuses suitable for isolation
- 8.9.4 Additional constructional requirements for fuse holders for linked fuse-carriers, suitable for isolation
- Table 11 – Minimum creepage distances
- 8.10 Resistance to heat
- 8.11 Mechanical strength
- 8.12 Resistance to corrosion [Go to Page]
- 8.12.1 General
- 8.12.2 Resistance to rusting
- 8.12.3 Resistance to season cracking
- 8.13 Resistance to abnormal heat and fire
- 8.14 Electromagnetic compatibility
- 9 Tests [Go to Page]
- 9.1 Overview [Go to Page]
- 9.1.1 General
- 9.1.2 Kind of tests
- 9.1.3 Ambient air temperature (Ta)
- 9.1.4 Condition of the fuse
- 9.1.5 Arrangement of the fuse and dimensions
- 9.1.6 Testing of fuse-links
- Table 12 – Survey of complete tests on fuse-links and number of fuse-links to be tested
- Table 13 – Survey of tests on fuse-links of smallest rated currentof homogeneous series and number of fuse-links to be tested [Go to Page]
- 9.1.7 Testing of fuse-holders
- Table 14 – Survey of tests on fuse-links of rated currents between the largest and the smallest rated current of a homogeneous series and number of fuse-links to be tested
- Table 15 – Survey of complete tests on fuse-holders and number of fuse-holders to be tested
- 9.2 Verification of the insulating properties and of the suitability for isolation [Go to Page]
- 9.2.1 Arrangement of the fuse-holder
- 9.2.2 Verification of the insulating properties
- 9.2.3 Verification of the suitability for isolation
- Table 16 – Test voltage [Go to Page]
- 9.2.4 Acceptability of test results
- 9.3 Verification of temperature rise and power dissipation [Go to Page]
- 9.3.1 Arrangement of the fuse
- Table 17 – Test voltage across the poles for the verification of the suitability for isolation [Go to Page]
- 9.3.2 Measurement of the temperature rise
- 9.3.3 Measurement of the power dissipation of the fuse-link
- 9.3.4 Test method
- Table 18 – Cross-sectional area of copper conductors for tests corresponding to Subclauses 9.3 and 9.4 [Go to Page]
- 9.3.5 Acceptability of test results
- 9.4 Verification of operation [Go to Page]
- 9.4.1 Arrangement of the fuse
- 9.4.2 Ambient air temperature
- 9.4.3 Test method and acceptability of test results
- Table 19 – Cross-section areas of the copper conductors for the test of "aM" fuses
- Table 20 – Table for test in Subclause 9.4.3.5
- 9.5 Verification of the breaking capacity [Go to Page]
- 9.5.1 Arrangement of the fuse
- 9.5.2 Characteristics of the test circuit
- 9.5.3 Measuring instruments
- 9.5.4 Calibration of test circuit
- Table 21 – Values for breaking-capacity tests on AC fuses [Go to Page]
- 9.5.5 Test method
- Table 22 – Values for breaking-capacity tests on DC fuses [Go to Page]
- 9.5.6 Ambient air temperature
- 9.5.7 Interpretation of oscillograms
- 9.5.8 Acceptability of test results
- 9.6 Verification of the cut-off current characteristics [Go to Page]
- 9.6.1 Test method
- 9.6.2 Acceptability of test results
- 9.7 Verification of I2t characteristics and overcurrent selectivity [Go to Page]
- 9.7.1 Test method
- 9.7.2 Acceptability of test results
- 9.7.3 Verification of compliance for fuse-links at 0,01 s
- 9.7.4 Verification of overcurrent selectivity
- 9.8 Verification of the degree of protection of enclosures
- 9.9 Verification of resistance to heat
- 9.10 Verification of non-deterioration of contacts [Go to Page]
- 9.10.1 General
- 9.10.2 Arrangement of the fuse
- 9.10.3 Test method
- 9.10.4 Acceptability of test results
- 9.11 Mechanical and miscellaneous tests [Go to Page]
- 9.11.1 Mechanical strength
- 9.11.2 Miscellaneous tests
- 9.12 Test of durability of markings
- Figures [Go to Page]
- Figure 1 – Diagram illustrating the means of verification of the time-current characteristic, using the results of the tests at the "gate" currents (example)
- Figure 2 – Overload curve and time-current characteristic for "a" fuse-links
- Figure 3 – Time-current zone for aM fuses
- Figure 4 – General presentation of the cut-off characteristics for a series of AC fuse‑links
- Figure 5 – Typical diagram of the circuit used for breaking capacity test (see 9.5)
- Figure 6 – Interpretation of oscillograms taken during the AC breaking-capacity tests (see 9.5.7)
- Figure 7 – Interpretation of oscillograms taken during the DC breaking-capacity tests (see 9.5.7)
- Figure 8 – Glow-wire and position of the thermocouple
- Figure 9 – Test apparatus (example)
- Annexes [Go to Page]
- Annex A (informative) Measurement of short-circuit power factor
- Figure A.1 – Determination of circuit-impedance for calculation of power factor in accordance with method I
- Annex B (informative) Calculation of pre-arcing I2t values for "gG", "gM" and "gU" fuse‑links and calculation of operating I2t values at reduced voltage [Go to Page]
- B.1 Evaluation of the pre-arcing I2t value at 0,01 s
- B.2 Calculation of the value of pre-arcing I2t under the conditions of test no. 2
- B.3 Calculation of the value of operating I2t at reduced voltage
- Annex C (informative) Calculation of cut-off current-time characteristic [Go to Page]
- C.1 Overview
- C.2 Preliminary note
- C.3 Definition
- C.4 Characteristic
- C.5 Test condition
- C.6 Calculation from the measured values
- Figure C.1 – Cut-off current characteristic as a function of actual pre-arcing time
- Annex D (informative) Effect of change of ambient temperature and surroundings on the performance of fuse-links [Go to Page]
- D.1 Effect of increase of ambient temperature [Go to Page]
- D.1.1 On current rating
- D.1.2 On temperature rise
- D.1.3 On conventional fusing and non-fusing current (If and Inf)
- D.1.4 For motor starting conditions
- D.2 Effect of decrease of ambient air temperature
- D.3 Effect of installation conditions
- Annex E (normative) Particular requirements for fuse-bases with screwless-type terminals for external copper conductors [Go to Page]
- E.1 General
- E.3 Terms and definitions
- E.7 Marking
- E.8 Standard conditions for construction [Go to Page]
- E.8.1 Fixed connections including terminals
- E.8.2 Dimensions of connectable conductors
- E.8.3 Connectable cross-sectional areas
- E.8.4 Insertion and disconnecting of conductors
- E.8.5 Design and construction of terminals
- Table E.1 – Connectable conductors
- Table E.2 – Cross-sections of copper conductors connectable to terminals [Go to Page]
- [Go to Page]
- E.8.6 Resistance to ageing
- E.9 Tests [Go to Page]
- E.9.1 Test of reliability of terminals
- E.9.2 Tests of reliability of terminals for external conductors: mechanical strength
- E.9.3 Cycling test
- Table E.3 – Pull forces
- Figure E.1 – Connecting samples
- Figure E.2 – Examples of terminals
- Bibliography [Go to Page]
Copyright 2025 Compu-tecture, Inc.
All Rights Reserved.
About Us /
Careers /
support@madcad.com /
1.800.798.9296