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ABB S-093H 3BHB030478R0309 Heavy duty auxiliary contact module (rack)

ABB S-093H 3BHB030478R0309 is an industrial-grade heavy-duty auxiliary contact module launched by ABB, specifically designed for H-series high-power AC contactors. Its core function is to expand the number of contacts of the main contactor, realizing safety interlock, equipment status feedback and signal transmission of control circuits in high-voltage and high-current scenarios. The module adopts a reinforced snap-on mechanical connection, which fits precisely with the main contactor and operates synchronously. The contacts are made of high-wear-resistant silver alloy material with a double-breakpoint arc-extinguishing structure, complying with IEC 60947-5-1 international standard. It can withstand high-frequency operation and harsh industrial environments, serving as a key component to ensure circuit reliability in high-voltage and high-power electrical control systems.

ABB S-093H 3BHB030478R0309 Heavy duty auxiliary contact module (rack)

 

Specific Parameters

Electrical Parameters

Rated Insulation Voltage (Ui): 1000V AC, suitable for high-voltage control circuit scenariosRated Operating Voltage (Ue): 400V AC (AC-15 load), 250V DC (DC-13 load)Contact Configuration: 3 sets of normally open (NO) contacts, no normally closed contacts, contact type is double-breakpoint reinforced structureRated Current (Ie): 8A (400V AC) under AC-15 load, 0.6A (250V DC) under DC-13 loadVoltage Withstand Strength: ≥3000V AC (1 minute no breakdown) between contacts, and between contacts and housingInsulation Resistance: ≥100MΩ (measured with 500V DC megohmmeter, normal temperature and state)Electrical Life: ≥1 million switching cycles under AC-15 load, ≥500,000 switching cycles under DC-13 loadMechanical Life: ≥10 million switching cycles, meeting heavy-duty and high-frequency operation requirementsContact Resistance: ≤30mΩ (initial state), ensuring stable transmission of high-current signals

Mechanical Parameters

Overall Dimensions: 52mm (W) × 90mm (H) × 40mm (D), heavy-duty design adapting to the installation space of H-series contactorsWeight: Approximately 0.18kg, reinforced structure design balances mechanical strength and installation convenienceMounting Method: Reinforced snap-on mechanical connection, directly clamped on the top of ABB H-series contactors, no additional fasteners requiredHousing Material: Flame-retardant reinforced engineering plastic (UL94 V-0 grade), impact-resistant, wear-resistant, with anti-static surface treatmentContact Material: Silver-cadmium alloy (AgCdO), featuring excellent arc-extinguishing performance and anti-welding characteristicsConnection Method: Screw-type terminal blocks, compatible with 1.0-4.0mm² wire gauge, wiring torque 1.2-1.8N·mStatus Indication: No built-in indicator light, contact on-off status is fed back through control circuit signals

Environmental Parameters

Operating Temperature: -25℃ to +70℃ (non-condensing environment), covering high and low temperature industrial working conditionsStorage Temperature: -40℃ to +85℃, meeting storage and transportation environment requirementsRelative Humidity: 5% to 95% (non-condensing), adapting to humid industrial scenariosProtection Rating: IP20 (module itself, relying on overall control cabinet protection)EMC Compliance: Meets EN 55014-1 (emission limits) and EN 55014-2 (immunity) standardsVibration Resistance: 10-500Hz frequency range, 2g acceleration (sine wave), no contact bounce or connection looseningCertifications: CE (EMC/Low Voltage Directive), UL 508, IEC 60947-5-1 compliant, RoHS 2.0 compliant

Product Performance

Strong heavy-duty adaptability: Specifically designed for ABB H-series high-power contactors (such as H125-H630 series), reinforced snap-on structure resists vibration from high-current operation, no displacement after installationExcellent contact reliability: Silver-cadmium alloy contacts and double-breakpoint arc-extinguishing design effectively reduce arc ablation, no welding risk under heavy-duty and high-frequency operation, and stable contact resistance during long-term operationOutstanding high-voltage tolerance: 1000V AC rated insulation voltage and 3000V AC voltage withstand strength, adapting to high-voltage control circuits with no attenuation of insulation performanceEfficient installation and maintenance: Assembly and disassembly can be completed without tools, large wire gauge adaptation design meets the wiring needs of heavy-duty circuits, maintenance time ≤5 minutesHigh structural stability: Flame-retardant reinforced housing and reinforced snap-on design resist impact and vibration in industrial sites, no loosening or falling riskStrong safety compliance: High insulation level and flame-retardant characteristics effectively prevent short circuit and leakage risks, fully complying with safety specifications for high-voltage electrical control systems




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