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        • Lifecycle status

          Discontinued / Obsolete by OEM
          Apter Power specializes in sourcing obsolete ABB substation and switchgear components, supplying fully tested 1HSB495663-3 density relays to safeguard your legacy electrical grid against critical SF6 gas leakage and pressure drops.

        1HSB495663-3 1233-4270CNTHB

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        1001 reviews ｜ Need a Specific Revision?
        The ABB 1HSB495663-3 1233-4270CNTHB is an SF6 density relay for high-voltage switchgear, monitoring gas density with alarm/block contacts and temperature compensation.
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        Ships by Thursday, October 29
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        Warranty Policy
        We provide 1 year warranty for all remaining parts.
        The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
        Return Notice
        The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
        In the event of a defect, we will send new equipment, repair equipment or refund the purchase price based on our availability. You must contact us to obtain a return authorization and return the defective device to us within 14 days of reporting the defect.
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        Various transportation options are available in each country. Shipping methods and fees are clearly indicated on all quotations.Various transportation options are available in each country. Shipping methods and fees are clearly indicated on all quotations.
        Parts Availability
        Apter Power offers a wide range of components, products and services related to industrial automation. We also supply new products from a variety of quality manufacturers.
        How to order
        We have been working hard to update our inventory. If we have stock or parts available for new factory purchases, you can contact the order online. If we do not currently have an inventory, the displayed quantity will show "Ask". Please create an online quote or contact us by phone, fax or email to check availability.

        Technical specifications for 1HSB495663-3 1233-4270CNTHB

        • Manufacturer:
          ABB
        • Part Number:
          1HSB495663-3 1233-4270CNTHB
        • Product Family:
          ABB Advant OCS and Advant-800xA
        • Product Type:
          Density Monitor
        • Stock:
          1
        • Monitoring Medium:
          SF6 (Sulfur Hexafluoride)
        • Alarm Level 1:
          0.72 MPa abs (with red dots)
        • Alarm Levels 2-3:
          0.70 MPa abs
        • Protection Class:
          IP65 (with weatherproof cover)
        • Operating Temp:
          -20°C to +60°C
        • Weight:
          0.85 kg
        • Estimated shipping dimensions:
          10x11.2x6cm
        • Tariff Code:
          8537109090
        • Country of origin:
          Sweden
        • Place of shipment:
          Xiamen, Fujian, China
        By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

        More Information

        Overview Manuals Specifications Application Certifications Compatibility

        Features:

        • Continuously tracks SF6 gas density with temperature compensation for accurate readings
        • Provides dry contact outputs for leakage warning and circuit-breaker blocking
        • IP65-rated with weatherproof cover, suitable for outdoor substations
        The 1HSB495663-3 is a specialized instrument that monitors the density of SF6 (sulfur hexafluoride) gas, the critical insulating and arc-quenching medium in high-voltage circuit-breakers and GIS (Gas-Insulated Switchgear). Unlike a simple pressure gauge, this density relay incorporates a built-in mechanical temperature compensation system. This ensures that the displayed reading and the switching behavior always reference the gas density at a standard temperature of 20°C, regardless of the ambient temperature fluctuations.

        The core protective function of the 1HSB495663-3 is provided by its integrated alarm and lock switch contacts. These are "dry" (no external power) contacts that change state when the gas density falls below preset thresholds. The first level, alarm, typically triggers a warning signal, alerting maintenance personnel to a slow leak that requires attention. The second, critical level, acts as a lock-out, directly blocking the circuit-breaker's control circuit.

        Engineered for the demanding conditions of electrical substations, the 1HSB495663-3 features a robust design. It typically offers an IP65 protection rating with a weatherproof cover, making it resistant to dust, water jets, and harsh weather conditions. This ensures reliable operation in outdoor environments. The device provides a direct local readout via a mechanical pointer and also transmits its status through electrical contacts for remote monitoring by SCADA systems.

        The 1HSB495663-3 1233-4270CNTHB ABB Density Monitor may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).

        ABB 1HSB495663-3 1233-4270CNTHB Density Monitor Manuals, Datasheets, Drivers, Link Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
        ABB 1HSB495663-3 1233-4270CNTHB Density Monitor Specs

        General

        • Manufacturer ABB
        • Model 1HSB495663-3 1233-4270CNTHB
        • Condition New Original ready stock
        • Product Family CI522A 3BSE018283R1,CI532V04,CI540 3BSE001077R1
        Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
        • High-Voltage SF6 Circuit Breakers: Directly installed on column-type and tank-type live-tank breakers—most notably the ABB LTB Series (e.g., LTB 145, LTB 245, LTB 550)—to verify that the gas medium is dense enough to quench high-power electrical arcs safely.
        • Gas Insulated Switchgear (GIS): Mounted onto individual gas compartments or gas zones within a GIS matrix to monitor isolated chambers, pinpoint slow micro-leaks, and map localized gas degradation.
        • Gas Insulated Lines (GIL) & Medium-Voltage Ring Main Units (RMU): Deployed across specialized long-distance underground gas cables and industrial gas-filled switches to manage long-term infrastructure health.
        • China National Standard Compliance ("CN" Specification): The CN designator denotes that the dial scale (typically 0.00 to 0.90 MPa or equivalent bar metrics), color-coded safety zones (green/red), and text notation fully align with the State Grid Corporation of China (SGCC) and China Southern Power Grid operational and verification codes.
        • IEC 62271 Compatibility: Manufactured in accordance with the IEC 62271 series standards governing high-voltage switchgear and controlgear, ensuring that its measurement accuracy, dielectric insulation strength, and physical build meet stringent utility requirements.
        • IP65 / Ingress Protection: The casing structure achieves an IP65 (or higher when paired with the 1HSB495663-2 stainless steel rain cover housing) enclosure rating, making it completely dust-tight and resistant to driving rain, heavy humidity, and freezing outdoor cycles.
        • Universal Switching Capacity: The internal micro-switches handle standard industrial control voltages (typically up to 250V AC/DC, up to 1A/30W resistive loads), making them fully compatible with all modern protection relays and bay controllers.
        • Standard Process Connections: Features a standard metric M20 × 1.5 or G 1/2 B thread connection interface, enabling a leak-free mechanical seat with the breaker body via standard coupling valves or non-return adapters.
        • Cross-Vendor Interchangeability: Due to its specialized bimetallic temperature compensation engineering (THB specification), this monitor tracks gas molecular density at a 20 °C baseline rather than simple pressure. Consequently, it can replace equivalent 100mm mechanical density monitors from third-party instrumentation suppliers (such as WIKA or Ashcroft) on similar gas enclosures, provided the target alarm/lockout setpoints match (e.g., 0.60 MPa for alarm / 0.55 MPa for lockout).
        Description
        The 1HSB495663-3 1233-4270CNTHB is a precision SF6 gas density relay manufactured by ABB for high-voltage switchgear protection. It monitors SF6 gas density with alarm level 1 at 0.72 MPa abs and levels 2-3 at 0.70 MPa abs. The 1HSB495663-3 1233-4270CNTHB ensures reliable operation of circuit-breakers by detecting gas leakage.

        With built-in mechanical temperature compensation, the 1HSB495663-3 1233-4270CNTHB provides accurate density readings regardless of ambient temperature changes. The 1HSB495663-3 1233-4270CNTHB features alarm and lock switch contacts for protective actions. 

        The 1HSB495663-3 1233-4270CNTHB outputs both mechanical pointer indication and electrical contact signals for SCADA integration. Its IP65-rated enclosure with weatherproof cover ensures durability in outdoor substations. The 1HSB495663-3 1233-4270CNTHB’s dry contact design requires no external power source. This density relay is compatible with most 110KV/220KV SF6 switchgear.

        For maintenance and replacement, the 1HSB495663-3 1233-4270CNTHB mounts via flange or panel installation. With an operating temperature range of -20°C to +60°C, the 1HSB495663-3 1233-4270CNTHB performs reliably in extreme climates. Always verify the rating plate parameters when replacing the 1HSB495663-3 1233-4270CNTHB to ensure correct pressure range for your circuit-breaker.
        Alternative Names
        1HSB495663-3 1233-427OCNTHB IHSB495663-3 I233-4270CNTHB 1HSB495663 3 1233 4270CNTHB 07BT62R1 07DI92 07EA63R1 07EB62R1 07KP60R101
        Technical notes
        The ABB 1HSB495663-3 is a temperature-compensated SF6 density relay for high-voltage GIS and circuit-breakers (110KV/220KV). It provides mechanical indication and alarm/lock dry contacts for leakage protection, with IP65 rating. Always confirm pressure range with the rating plate before replacement, as -3 typically corresponds to 0.6 MPa applications.
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        FAQS

        The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
        VIEW ALL FAQS
        What is the primary function of the 1HSB495663-3?
        It continuously monitors SF6 gas density in high-voltage switchgear, providing alarm signals for leakage and locking the circuit-breaker at critical density to prevent dangerous operation.
        How does the 1HSB495663-3 achieve accurate readings in varying temperatures?
        The 1HSB495663-3 uses built-in mechanical temperature compensation to display gas density referenced to 20°C standard, eliminating ambient temperature effects on readings.
        What is the difference between 1HSB495663-3 and 1HSB495663-2?
        The core difference is pressure range: -3 typically suits 0.6 MPa applications (110/220KV), while -2 is for 0.9 MPa ranges. Always verify rating plate parameters before replacement.
        Does the 1HSB495663-3 require external power?
        No. It is a mechanical pressure switch with dry contacts. No external power supply is needed—simply connect its contacts into the circuit-breaker control or signal circuit.

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