ABB SS832 Voting Unit Redundant Power Supply 24VDC

ABB SS832 Voting Unit for Redundant Power Configurations

The SS832 is a compact voting unit designed to manage and supervise redundant 24V DC power supplies in industrial control systems. It ensures reliable power delivery by monitoring both sources and providing status feedback.

Core System Specifications

• Brand & Article Number: ABB, 3BSC610068R1
• Model: SS832
• Product Type: Voter Unit
• Rated Input Voltage: 2x 24 V DC (Nominal)
• Rated Input Power: 2 x 10 A
• Rated Output Current: 10 A (20 A in Parallel Operation)
• Maximum Output Current (Overload): 25 A
• Output Voltage Drop (Typical at max current): 0.85 V
• Short Circuit Current (Secondary): Max 25 A RMS
• Heat Dissipation: 18 W
• Supervision Relay: Yes (Voltage-free "OK" contact per channel)
• Load Sharing: Supported in Parallel Operation

Electrical & Protection Features

• Accepts two independent 24V DC power supply inputs for redundant operation.
• Separates and supervises the voltage from each power supply source.
• Output is protected against overcurrent (current limiting) and overvoltage (OVP).
• Green LED on front panel for each channel provides visual confirmation of healthy output voltage.
• Simultaneous with LED, a voltage-free "OK" relay contact closes for remote monitoring and interlocking.
• Trip levels for supervision are factory preset for consistent performance.
• Designed for SELV (Safety Extra Low Voltage) and PELV (Protective Extra Low Voltage) applications.

Certifications & Environmental Ratings

• Electrical Safety: Compliant with IEC 61131-2, UL 508, EN 50178.
• Marine: Certified by ABS, BV, DNV-GL, LR.
• Environmental: G2 compliance for corrosive atmospheres (ISA-S71.04).
• EMC: Complies with EN 61000-6-4 (Emissions) and EN 61000-6-2 (Immunity).
• Enclosure: IP20 protection rating (IEC 60529).
• RoHS/WEEE: Compliant with EU directives.
• Equipment Class: Class I (requires Protective Earth connection).
• Overvoltage Category: III for connection to primary TN network.

Mechanical & Installation Data

• Mounting: Simple DIN-rail mounting (35mm).
• Dimensions (W x H x D): 32 mm x 125 mm x 117 mm (1.26" x 4.9" x 4.61")
• Weight: 350 g (0.77 lbs.)
• Mounting Spacing: 15 mm side-to-side, 25 mm above/below for ventilation.
• Maximum Ambient Temperature: 55 °C
• Pollution Degree: 2 (IEC 60664-1)

Installation & Application Guidelines

• Install on a standard 35mm DIN rail, ensuring recommended spacing for adequate heat dissipation.
• Connect the outputs of two redundant 24V DC power supplies to the voter's input terminals.
• The voter output can be connected to critical loads such as PLCs, I/O systems, or controllers.
• For higher current requirements (up to 20A), two SS832 units can be configured for parallel operation.
• Utilize the voltage-free "OK" contacts to signal power health to the control system or alarm panels.
• Ensure a proper protective earth (PE) connection is made, as this is a Class I device.
• Do not exceed the maximum ambient temperature of 55°C to maintain specified performance.

For technical drawings or to order the ABB SS832 Voting Unit (3BSC610068R1), contact our sales team.

Contact: Email sales@nex-auto.com or WhatsApp +86 153 9242 9628.

Partner: NexAuto Technology Limited

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