ABB 1SBN030111R1000 VEM4 Mechanical and Electrical Interlock Set 2P Mechanic Interlock for Switch

The ABB VEM4 (1SBN030111R1000) is a Mechanical and Electrical Interlock Set designed to prevent simultaneous operation of two contactors or switches, ensuring safe and reliable interlocking in industrial control panels. The VEM4 is a 2-pole interlock accessory with a compact footprint of 25 mm × 43 mm × 31.6 mm and a lightweight 35 g construction, making it ideal for space-constrained switchgear installations.

Technical Specifications

Certifications & Standards

• CE: Conformité Européenne — meets EU safety, health, and environmental requirements
• UKCA: UK Conformity Assessed — approved for the Great Britain market
• RoHS: Restriction of Hazardous Substances — compliant with EU Directive 2011/65/EU
• RoHS II: Compliant with the updated RoHS II Directive 2011/65/EU including Annex II
• REACH: Compliant with EU Regulation (EC) No 1907/2006 on chemical substances
• WEEE: Compliant with Waste Electrical and Electronic Equipment Directive 2012/19/EU
• IEC 60947-1: General rules for low-voltage switchgear and controlgear
• IEC 60947-5: Control circuit devices and switching elements
• IEC/EN 60947-5: European harmonised standard for control circuit devices
• EN 60947-5: European standard for control circuit devices and switching elements
• IEC 60529: Degrees of protection provided by enclosures (IP Code)
• EN 60529: European harmonised standard for enclosure protection (IP Code)
• UL 60947-1: UL standard for low-voltage switchgear and controlgear — general rules
• UL 60947-4-1: UL standard for electromechanical contactors and motor-starters
• CSA: Canadian Standards Association certification for the Canadian market
• CSA C22.2 No.60947-1-13: CSA standard for low-voltage switchgear general rules
• CSA C22.2 No.60947-4-1: CSA standard for contactors and motor-starters
• CSA C22.2 No.60947: CSA general compliance with the 60947 switchgear and controlgear family

Applications & Use Cases

• Interlocking two contactors to prevent simultaneous energisation in reversing starter circuits
• Star-delta motor starter panels requiring mechanical safety interlock between main and delta contactors
• Industrial control panels and motor control centres (MCC) where dual-contactor switching is required
• Automation systems demanding IEC 60947-5 compliant interlock accessories
• OEM machine builders requiring compact, lightweight interlock solutions