3.6WJON66.3

3.6WJON66.3 Datasheet


3.6WJON65 3.6WJON66.3.6WJON610 3.6WJON616 3.6WJON620 3.6WJON625 3.6WJON631.5 3.6WJON640 3.6WJON650

Part Datasheet
3.6WJON66.3 3.6WJON66.3 3.6WJON66.3 (pdf)
Related Parts Information
3.6WJON650 3.6WJON650 3.6WJON650
3.6WJON631.5 3.6WJON631.5 3.6WJON631.5
3.6WFFHO160 3.6WFFHO160 3.6WFFHO160
3.6WFLSJ160 3.6WFLSJ160 3.6WFLSJ160
3.6WDLSJ100 3.6WDLSJ100 3.6WDLSJ100
3.6WKLSJ250 3.6WKLSJ250 3.6WKLSJ250
3.6WFLSJ200 3.6WFLSJ200 3.6WFLSJ200
3.6WDFHO63 3.6WDFHO63 3.6WDFHO63
3.6WDFHO80 3.6WDFHO80 3.6WDFHO80
3.6WDOH6125 3.6WDOH6125 3.6WDOH6125
3.6WDLSJ63 3.6WDLSJ63 3.6WDLSJ63
3.6WDOH680 3.6WDOH680 3.6WDOH680
3.6WDFHO125 3.6WDFHO125 3.6WDFHO125
3.6WDOH663 3.6WDOH663 3.6WDOH663
3.6WDFHO100 3.6WDFHO100 3.6WDFHO100
3.6WFFH41200 3.6WFFH41200 3.6WFFH41200
3.6WDOH6100 3.6WDOH6100 3.6WDOH6100
3.6WKLSJ400 3.6WKLSJ400 3.6WKLSJ400
3.6WKLSJ315 3.6WKLSJ315 3.6WKLSJ315
3.6WFFHO200 3.6WFFHO200 3.6WFFHO200
3.6WKFHO315 3.6WKFHO315 3.6WKFHO315
3.6WKFHO250 3.6WKFHO250 3.6WKFHO250
3.6WKFHO355 3.6WKFHO355 3.6WKFHO355
3.6WKFHO400 3.6WKFHO400 3.6WKFHO400
3.6WKGHO450 3.6WKGHO450 3.6WKGHO450
3.6WJON65 3.6WJON65 3.6WJON65
3.6WJON610 3.6WJON610 3.6WJON610
PDF Datasheet Preview
Motor Fuse Links

British Standard Motor Fuse Links

North American Motor Fuse Links

DIN Dimensioned Motor Fuse Links

Motor fuse links comply with IEC60282-1, IEC644 and BS5907.

Available in DIN 43625 and BS2692 dimensions.

Sold in a wide range of ratings from kV 5 to 450 A kV 5 to 355 A

North American dimensioned products also available. 2R to 24R ratings.

Bussmann Motor Fuse Links

The Bussmann range of motor fuse links are designed to meet the specific requirements necessary for motor protection. During the starting cycle of direct on-line motors, the fuse elements will reach a considerably higher temperature than during normal operation this is due to the high amount of current the motor will draw as it starts, typically, 6 times its normal load current value . This results in expansion and contraction of the fuse elements and could cause premature operation of the fuse.

Bussmann motor fuse links encompass an advanced design to minimise this effect. This therefore, negates the need to over specify the fuse rating due to high values of motor starting current.

Bussmann motor fuse links operate extremely quickly under heavy fault currents, resulting from the time / current characteristic. Low power dissipation ensures low temperature rise, important in multi-tier starters for example. Switching Arc , voltages are lower than permitted values, therefore, 5.5kV fuses are also suitable for 4.8kV and 2.4kV circuits.

For more information visit our website

Motor Fuse Links

Application

Fuse Links provide short circuit protection in motor circuits to both the motor starter and cables from the starter to the motor. Overload protection is provided by the motor starter, generally by an overload relay and contactor. Combination striker tripping may also form part of associated equipment which houses the fuse links and motor starters.

Application Procedure

For any motor the fuse current rating is determined by magnitude and duration of starting current, except in a few situations where the starting currents are very light. The fuse current rating should therefore be selected as follows:

Direct-on-line Starting

In the absence of specific information the starting current can usually be taken to be six times the motor’s full load current. The starting time will depend on the type of the drive but will be approximately as follows:

Pump Motors - 6 seconds

Mill Motors - 10 to 15 seconds

Fan Motors - 60 seconds

These are average values and the appropriate figures for starting current and starting time for actual installation should be obtained wherever possible.

Multiply the starting current by and using this value of current and the starting time, it is recommended that a minimum time of 5 seconds be adopted , plot this point on the time-current characteristics of the fuse link. The correct current rating of the fuse is then chosen as being the one immediately to the right of the point so plotted. The chosen fuse must also have a current rating of at least times the full-load current of the associated motor.

The rating chosen will be adequate for normal applications where the associated motor is not started more than twice in given period of one hour.

For applications using more frequent starting duties, a greater derating factor must be applied as shown in the following table.

Maximum 2 starts per hour - Derating factor Maximum 4 starts per hour - Derating factor

Maximum 8 starts per hour - Derating factor Maximum 16 starts per hour - Derating factor

Assisted Starting

A similar method of fuse selection may be used as for direct-on-line starting see above , but it must be noted that the normal running current of the motor is likely to be closer in value to the nominal current rating of the fuse than for direct-online applications.

The rating of fuse chosen will need to be appreciably greater than the motor running current to allow for restricted cooling inside control gear cubicles, particularly where multi-tier starters are involved. In case of doubt refer to Bussmann for further guidance.

Note

For applications involving more frequent starting duties than 16 times per hour or where unusual duty cycles are involved, consult Bussmann application engineers for advice.

For more information visit our website

Motor Fuse Links

Selection Tables Table of ratings for motor fuses - 7.2kV to British Standard dimensions
3.6WJON65 3.6WJON66.3.6WJON610 3.6WJON616 3.6WJON620 3.6WJON625 3.6WJON631.5 3.6WJON640 3.6WJON650
3.6WDOH650 3.6WDOH663 3.6WDOH680 3.6WDOH6100 3.6WDOH6125
3.6WFOH6160 3.6WFOH6200
3.6WDFHO50 3.6WDFHO63 3.6WDFHO80 3.6WDFHO100 3.6WDFHO125
More datasheets: 3.6WFFH41200 | 3.6WDOH6100 | 3.6WKLSJ400 | 3.6WKLSJ315 | 3.6WFFHO200 | 3.6WKFHO315 | 3.6WKFHO250 | 3.6WKFHO355 | 3.6WKFHO400 | 3.6WKGHO450


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Datasheet ID: 3.6WJON66.3 506350