# US 7,744,424 B2 · Expansion connection module for connecting to at least two coil connectors of an electromagnetic switching device, in particular a contactor > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 7,744,424 B2 - Document ID: US7744424B2 - Status: Granted - Kind: B2 - Application number: 12/385,040 - Filed: 2009-03-30 - Published: 2009-10-01 - Granted: 2010-06-29 - Earliest claimed: 2008-04-01 - Assignees: Siemens Aktiengesellschaft - Inventors: Khalil Hadir; Manuela Lüftl - Web page: https://patentgrep.com/patent/US7744424B2 ## CPC - H01H 11/0031: {for allowing different types or orientation of connections to contacts} - H01H 50/443: {Connections to coils} - H01H 2011/0037: {with removable or replaceable terminal blocks} - H01H 2050/046: {Assembling parts of a relay by using snap mounting techniques} - H01R 4/28: Clamped connections, spring connections (made by means of terminals specially adapted for contact with, or insertion into, printed circuits H01R12/00) - H01R 9/24: Terminal blocks - H01H: ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES (contact cables H01B7/10; electrolytic self-interrupters H01G9/18; emergency protective circuit arrangements H02H; switching by electronic means without contact-making H03K17/00) - H01R: ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS ## Abstract An expansion connection module is disclosed for connecting to at least two coil connectors of an electromagnetic switching device, in particular a contactor. In at least one embodiment, the expansion connection module includes a housing; at least one fastening device for fixing the expansion connection module to the electromagnetic switching device or to a switchgear unit positioned adjacent to the electromagnetic switching device; at least two connection openings and at least two terminal blocks associated with the at least two connection openings for the purpose of connecting voltage supply lines; and at least two flexible leads for electrically connecting the terminal blocks of the expansion connection module to the at least two coil connectors of the electromagnetic switching device. ## Claims ### Claim 1 An expansion connection module for connecting to at least two coil connectors of an electromagnetic switching device, the expansion connection module comprising: a housing; at least one fastening device for fixing the expansion connection module to the electromagnetic switching device or to a switchgear unit positioned adjacent to the electromagnetic switching device; at least two connection openings; at least two terminal blocks, associated with the at least two connection openings, for connecting voltage supply lines; and at least two flexible leads for electrically connecting the terminal blocks of the expansion connection module to coil connectors of the electromagnetic switching device, wherein a portion of the housing is configured to be inserted into the electromagnetic switching device. ### Claim 2 (depends on 1) The expansion connection module as claimed in claim 1, wherein the terminal blocks are embodied as screw-type terminals or as spring-loaded terminals. ### Claim 3 (depends on 1) The expansion connection module as claimed in claim 1, wherein the expansion connection module is fixable in a positive-locking manner to the electromagnetic switching device or to the switchgear unit positioned adjacent to the electromagnetic switching device. ### Claim 4 (depends on 1) The expansion connection module as claimed in claim 1, wherein at least two connection openings of the expansion connection module are arranged on one side of the expansion connection module. ### Claim 5 (depends on 1) The expansion connection module as claimed in claim 1, wherein the housing of the expansion connection module has a cover. ### Claim 6 (depends on 1) The expansion connection module as claimed in claim 1, wherein the expansion connection module has at least two feedthroughs for opening the terminal blocks, by way of an operating tool which can be passed through. ### Claim 7 (depends on 1) The expansion connection module as claimed in claim 1, wherein the cross-section of the connection openings is the same. ### Claim 8 (depends on 1) The expansion connection module as claimed in claim 1, wherein at least one flexible lead is routed in a flexible lead guide at the end facing toward the expansion connection module. ### Claim 9 (depends on 1) The expansion connection module as claimed in claim 1, wherein the flexible leads are fed through openings in the housing. ### Claim 10 (depends on 1) The expansion connection module as claimed in claim 1, wherein the expansion connection module has at least one securing device for fixing at least one of a further switching device and another accessory part. ### Claim 11 (depends on 2) The expansion connection module as claimed in claim 2, wherein the expansion connection module is configured to be fixed in a positive-locking manner to the electromagnetic switching device or to the switchgear unit positioned adjacent to the electromagnetic switching device. ### Claim 12 (depends on 2) The expansion connection module as claimed in claim 2, wherein at least two connection openings of the expansion connection module are arranged on one side of the expansion connection module. ### Claim 13 (depends on 2) The expansion connection module as claimed in claim 2, wherein the expansion connection module has at least two feedthroughs for the spring-loaded terminals, by way of an operating tool which can be passed through the feedthroughs. ### Claim 14 (depends on 5) The expansion connection module as claimed in claim 5, wherein the flexible leads are fed through openings in the cover of the housing.