GB562745A - Improvements in automatic electric circuit breaking devices - Google Patents

Improvements in automatic electric circuit breaking devices

Info

Publication number
GB562745A
GB562745A GB525043A GB525043A GB562745A GB 562745 A GB562745 A GB 562745A GB 525043 A GB525043 A GB 525043A GB 525043 A GB525043 A GB 525043A GB 562745 A GB562745 A GB 562745A
Authority
GB
United Kingdom
Prior art keywords
fuse
cut
auxiliary
fusible
auxiliary conductor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB525043A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to BE446947D priority Critical patent/BE446947A/xx
Priority to NL107462A priority patent/NL59271C/xx
Priority to US48022643 priority patent/US2400408A/en
Application filed by Individual filed Critical Individual
Priority to GB525043A priority patent/GB562745A/en
Publication of GB562745A publication Critical patent/GB562745A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/0241—Structural association of a fuse and another component or apparatus
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/38—Means for extinguishing or suppressing arc
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/14—Electrothermal mechanisms
    • H01H71/16—Electrothermal mechanisms with bimetal element
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/0039—Means for influencing the rupture process of the fusible element

Abstract

562,745. Fusible cut-outs. HAEFELFINGER, A. April 1, 1943, No. 5250. [Class 38 (i)] [Also in Group XXXVII] Fusible cut-outs suitable for H.T. circuits normally carrying very low currents are adapted to be ruptured by the arc set up between the fuse and an adjacent auxiliary conductor or conductors, which may also be fusible, when the potential between them rises due to operation of another cutout in series with the fuse, the arrangement enabling a mechanically-robust construction of fuse to be employed. The fuse 6 is in series with a heating coil 8 of a bimetal latch 11 and contacts 9, 10 in the main circuit between the ring 4 and cap 2 of the fuse box 1, which may contain an arcquenching medium. The point 5 of an auxiliary conductor 16 connected to ring 4 is in proximity to the fuse 6, if desired, with an interposed dielectric screen 15. When the contacts 9, 10 open on overload, the potential increases across the gap between 5, 6 and the resulting arc destroys the fuse 6. The mechanical cut-out 7 may be replaced by an auxiliary fuse in a protective metal casing, or by an incandescent lamp, which may be in a separate container on the end of the box 1, Fig. 3 (not shown), or interpolated between the two sections of fuse 6, with the auxiliary conductor having points adjacent each section and shunting the auxiliary fuse, Fig. 2 (not shown). A spark-gap may shunt the cut-out in order to prevent excessive voltage when opened.
GB525043A 1941-10-01 1943-04-01 Improvements in automatic electric circuit breaking devices Expired GB562745A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
BE446947D BE446947A (en) 1941-10-01
NL107462A NL59271C (en) 1941-10-01 1942-08-26
US48022643 US2400408A (en) 1941-10-01 1943-03-23 Electrical circuit breaking fuse of the controlled operation type
GB525043A GB562745A (en) 1941-10-01 1943-04-01 Improvements in automatic electric circuit breaking devices

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CH59271X 1941-10-01
CH2400408X 1941-10-01
CH446947X 1941-10-01
GB525043A GB562745A (en) 1941-10-01 1943-04-01 Improvements in automatic electric circuit breaking devices

Publications (1)

Publication Number Publication Date
GB562745A true GB562745A (en) 1944-07-13

Family

ID=53029990

Family Applications (1)

Application Number Title Priority Date Filing Date
GB525043A Expired GB562745A (en) 1941-10-01 1943-04-01 Improvements in automatic electric circuit breaking devices

Country Status (4)

Country Link
US (1) US2400408A (en)
BE (1) BE446947A (en)
GB (1) GB562745A (en)
NL (1) NL59271C (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3304387A (en) * 1966-01-24 1967-02-14 S & C Electric Co Current-limiting fuse having parallel current-limiting elements and a series connected current calibrated element with auxiliary arc gaps to blow the current-limiting elements one by one
US3304389A (en) * 1966-01-27 1967-02-14 S & C Electric Co Current-limiting fuse having an impact member to sever mechanically ribbon extensions of current-limiting elements
NL294395A (en) * 1962-06-22
US3334288A (en) * 1963-05-14 1967-08-01 Int Standard Electric Corp Fusing arrangement for a transistoregulated power supply
US3249800A (en) * 1963-08-02 1966-05-03 Henry J Huber Fast acting switch utilizing a vaporizable wire
US3400353A (en) * 1966-06-30 1968-09-03 S & C Electric Co Metal enclosed switchgear with series connected switch means, circuit interrupter means, current responsive means and operating means mounted on door
US3378621A (en) * 1967-03-10 1968-04-16 Westinghouse Electric Corp Electrode tip failure detector
US3448341A (en) * 1968-09-19 1969-06-03 Nasa Electrical load protection device
US3755769A (en) * 1969-10-31 1973-08-28 Mc Graw Edison Co Modularized fuse with precise gap
US3728657A (en) * 1971-07-26 1973-04-17 Mc Graw Edison Co Protector for electric circuits
US3735312A (en) * 1971-12-30 1973-05-22 Bell Telephone Labor Inc Three terminal fuse-resistor device
US5254967A (en) * 1992-10-02 1993-10-19 Nor-Am Electrical Limited Dual element fuse
US5355110A (en) * 1992-10-02 1994-10-11 Nor-Am Electrical Limited Dual element fuse
US7969275B2 (en) * 2007-11-14 2011-06-28 Enerdel, Inc. Fuse assembly with integrated current sensing
DE102017119285A1 (en) 2017-02-01 2018-08-02 Dehn + Söhne Gmbh + Co. Kg Triggerable fuse for low voltage applications

Also Published As

Publication number Publication date
US2400408A (en) 1946-05-14
BE446947A (en)
NL59271C (en)

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