Saia-Burgess 10a V3 series miniature microswitch with plain plunger.  This was replaced by the VCF-UL (UL approved version).

However, BOTH parts are now OBSOLETE.

For a possible alternative, please check out the 16a Essen Deinki MV2522.

VCF SPECIFICATION:

• Actuator: May be used with auxiliary actuator if desired (VB1, VB2, VBR1, VBE1, VL1, VLR1) - please contact us if you require assistance.
• Mechanism: Standard forces and movements
• Terminals: Three 6.3mm quick-connect tabs
• Elect Rating: Recommended max 10A on 125 or 250Vac
• Enclosure: Mechanism only: IP40  Exposed terminals