GB722615A - Improvements in and relating to automatic electric switches having overload release means - Google Patents
Improvements in and relating to automatic electric switches having overload release meansInfo
- Publication number
- GB722615A GB722615A GB8840/52A GB884052A GB722615A GB 722615 A GB722615 A GB 722615A GB 8840/52 A GB8840/52 A GB 8840/52A GB 884052 A GB884052 A GB 884052A GB 722615 A GB722615 A GB 722615A
- Authority
- GB
- United Kingdom
- Prior art keywords
- coil
- relating
- release means
- automatic electric
- electric switches
- 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
Links
- 230000004323 axial length Effects 0.000 abstract 2
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
- H01H73/48—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism having both electrothermal and electromagnetic automatic release
- H01H73/50—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism having both electrothermal and electromagnetic automatic release reset by lever
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
- H01H73/48—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism having both electrothermal and electromagnetic automatic release
- H01H73/56—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism having both electrothermal and electromagnetic automatic release reset by push-button, pull-knob or slide
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
- Electromagnets (AREA)
Abstract
722,615. Automatic circuit-breakers. LEYHAUSEN, W. April 7, 1952, No. 8840/52. Addition to 721,300. Drawings to Specification. Class 38 (5) In the switch of the main patent, the contact chamber is arranged to have a cross sectional area not less than that of the magnetic coil and a width not greater than 6 m.m., the ratio of this width to the effective axial length of the coil being not less than 0.8 and the ratio of the diameter of the coil to the axial length of the coil being greater than 3. The Specification describes and illustrates several modified arrangements of the switch of the main patent.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2721241X | 1951-09-28 | ||
GB706452A GB721300A (en) | 1952-03-19 | 1952-03-19 | Improvements in automatic electric switches having overload release means |
Publications (1)
Publication Number | Publication Date |
---|---|
GB722615A true GB722615A (en) | 1955-01-26 |
Family
ID=32299375
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB8840/52A Expired GB722615A (en) | 1951-09-28 | 1952-04-07 | Improvements in and relating to automatic electric switches having overload release means |
Country Status (6)
Country | Link |
---|---|
US (1) | US2721241A (en) |
BE (2) | BE502971A (en) |
CH (2) | CH292221A (en) |
FR (2) | FR1046582A (en) |
GB (1) | GB722615A (en) |
NL (1) | NL83752C (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1072713B (en) * | 1960-01-07 | VEB Elektroinstallation Annaberg, Annaberg-Buchhol'z (Erzgeb.) | Small self switch | |
DE1052532B (en) * | 1954-07-13 | 1959-03-12 | Siemens Ag | Small auto switch with cover cap |
US3688234A (en) * | 1970-04-27 | 1972-08-29 | Matsushita Electric Works Ltd | Push button type circuit protector |
FR2516304A1 (en) * | 1981-11-09 | 1983-05-13 | Telemecanique Electrique | MECHANICAL CONTROL SWITCH AND AUTOMATIC OPENING |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2456945A (en) * | 1944-05-16 | 1948-12-21 | Westinghouse Electric Corp | Relay |
US2573306A (en) * | 1948-08-11 | 1951-10-30 | Gen Electric | Electric circuit breaker |
US2494868A (en) * | 1948-09-14 | 1950-01-17 | Trumbull Electric Mfg Co | Circuit breaker |
-
0
- NL NL83752D patent/NL83752C/xx active
- BE BE510864D patent/BE510864A/xx unknown
- BE BE502971D patent/BE502971A/xx unknown
-
1951
- 1951-04-21 CH CH292221D patent/CH292221A/en unknown
- 1951-04-23 FR FR1046582D patent/FR1046582A/en not_active Expired
-
1952
- 1952-04-05 CH CH307222D patent/CH307222A/en unknown
- 1952-04-07 GB GB8840/52A patent/GB722615A/en not_active Expired
- 1952-04-08 FR FR62685D patent/FR62685E/en not_active Expired
- 1952-05-16 US US288102A patent/US2721241A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
FR1046582A (en) | 1953-12-08 |
BE510864A (en) | |
BE502971A (en) | |
FR62685E (en) | 1955-06-16 |
CH292221A (en) | 1953-07-31 |
US2721241A (en) | 1955-10-18 |
CH307222A (en) | 1955-05-15 |
NL83752C (en) |
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