ABB 1SBH136001R2131 NFZ31E-21 24-60V AC/DC 4-Pole Contactor Relay

The ABB NFZ31E-21 contactor relay (SKU: 1SBH136001R2131) is a 4-pole control relay from the ABB NFZ series, designed for 24–60V AC (50/60Hz) and 20–60V DC coil operation. Compact at 87 × 79 × 47 mm and weighing just 0.31 kg, the NFZ31E-21 suits a wide range of industrial control panel and automation applications requiring reliable switching and signal interfacing.

Technical Specifications

Certifications & Standards

• CE: Conformité Européenne — European market compliance
• UKCA: UK Conformity Assessed — Great Britain market compliance
• CCC: China Compulsory Certification
• CQC: China Quality Certification
• DNV: Det Norske Veritas — marine and offshore approval
• KC: Korea Certification mark
• LR: Lloyd's Register — marine type approval
• RINA: Registro Italiano Navale — marine approval
• RMRS: Russian Maritime Register of Shipping
• UL: Underwriters Laboratories — UL 508 and UL 60335-2-40 LZGH2 A2L listed
• IEC 60947-5-1: Low-voltage switchgear — control circuit devices and switching elements
• IEC 60947-5: Low-voltage switchgear — control circuit devices (general)
• IEC 60947-1: Low-voltage switchgear and controlgear — general rules
• EN 60947-1: European harmonised standard — general rules for low-voltage switchgear
• EN 60947-5: European harmonised standard — control circuit devices
• IEC/EN 60947-1: Combined IEC/EN compliance for general switchgear rules
• IEC/EN 60947-5: Combined IEC/EN compliance for control circuit devices
• IEC 60068-2: Environmental testing standard
• SEMI F47-0706: Semiconductor equipment voltage sag immunity standard
• UL 508: Industrial control equipment standard
• UL 60335-2-40 LZGH2 A2L: Safety of household and similar appliances — heat pumps (A2L refrigerant)
• CSA C22.2 No.14-13: Industrial control equipment — Canadian standard
• CSA C22.2 No.60335-2-40 LZGH2 A2L: Canadian standard — heat pump appliances (A2L refrigerant)
• CSA C22.2 No.60335: Canadian standard — safety of household appliances
• CSA C22.2 No.14: Canadian standard — industrial control equipment (general)
• CSA: Canadian Standards Association certification
• EN45555: General methods for the assessment of the ability of electrical and electronic products to be repaired and to undergo preparation for reuse
• EN45555-92: Extended product sustainability assessment standard
• REACH: EU regulation on registration, evaluation and authorisation of chemicals
• RoHS: Restriction of Hazardous Substances — EU Directive 2011/65/EU compliant
• WEEE: Waste Electrical and Electronic Equipment Directive compliant

Applications & Use Cases

• Control panel interlocking and signal switching in industrial automation systems
• HVAC and refrigeration equipment control (A2L refrigerant-compatible applications)
• Semiconductor fabrication equipment requiring SEMI F47 voltage sag immunity
• Marine and offshore control systems (DNV, LR, RINA, RMRS approved)
• Motor starter auxiliary control circuits
• Building automation and energy management systems