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Square D QMB30R - Fusible Bus Plug 30A 600V (3-Pole)

Square D
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The Square D QMB30R Bus Plug is a fused disconnect device designed to provide branch circuit protection and switching for industrial power distribution systems. It is rated for 600 VAC maximum and carries a current rating of 30 Amps, with an AIC rating suitable for interrupting fault currents. The unit features a compact, heavy-duty steel enclosure with a visible-blade, fusible switch mechanism, and it weighs 1 lb. This bus plug is compliant with UL and NEMA standards, ensuring reliable performance in demanding environments. Typical applications include connecting and protecting machinery, lighting, and other equipment in manufacturing plants and commercial facilities.

Key Features & Specifications
  • Type: Fusible disconnect switch, heavy-duty steel enclosure
  • Voltage Rating: 600 VAC
  • Current Rating: 30 Amps
  • Dimensions: Not specified
  • Standards: UL, NEMA
  • Applications: Industrial power distribution, branch circuit protection
  • Switch Type: Visible-blade, fusible
  • Configuration: 3-pole
  • Coil Voltage Maximum: Not applicable
  • Temp Rating: Not specified
  • Shipping Dimensions: Not specified
  • Phase: 3-phase
  • Voltage: 600 VAC
  • Amperage: 30 Amps
  • AIC rating: Not specified
  • Connection: Bus plug
  • Poles: 3
  • Protection: Fuse-based
  • Functions: Disconnect and circuit protection
  • Frame Size: Not specified
  • Trip Type: Fuse-dependent
  • Panel Type: Not specified
  • Breaker Type: Not applicable
  • Control Voltage Minimum: Not applicable
  • Control Voltage Maximum: Not applicable
  • MCM Size: Not specified
  • Metal Type: Steel
  • Panel Style: Not specified
  • Bus Type: Not specified
  • Fuse Class: Not specified
  • Insulation Temperature: Not specified
  • Inductance: Not specified
  • Impedance: Not specified
  • Barrels: Not specified
  • Class Rating: Not specified
  • Diameter: Not specified
  • Velocity: Not specified
  • Clip Center: Not specified
  • Clas: Not specified
  • Mounting: Bolt-on to busway
  • Hz: 50/60 Hz
  • Coil Material: Not applicable
  • Horse Power: Not specified
  • Aux Contacts: Not specified
  • CPT: Not specified
  • Full Load Amps: Not specified
  • Dist Voltage: Not specified
  • Bucket Size: Not specified
  • Bucket Style: Not specified
  • Bucket Type: Not specified
  • Full Load Amp Maximum: Not specified
  • Full Load Amp Minimum: Not specified
  • Enclosure: Heavy-duty steel
  • Relay Style: Not applicable
  • Coil Voltage Minimum: Not applicable
  • Wire: Not specified
  • Amperage Maximum: 30 Amps
  • Amperage Minimum: Not specified
  • Nema Rating: Not specified
  • Switch Style: Visible-blade, fusible
  • Wire Size: Not specified
  • Certification: UL
  • Circuit Breaker Mounting Style: Not applicable
  • Terminal Connection: Not specified
  • Frequency Rating: 50/60 Hz
  • Phase Connection: 3-phase
  • Standards: UL, NEMA
  • Compatible Frames: Not specified
  • Installation Type: Bolt-on to busway
  • Item QTY: 1
  • Nema Starter Size: Not applicable
  • Breaker Frame: Not applicable
  • Current Rating: 30 Amps
  • Reverse Standoff Voltage: Not specified
  • Watts: Not specified
  • Peak Pulse Current: Not specified
  • Breakdown Voltage (MIN VBR@IT ) (V): Not specified
  • Breakdown Voltage (VBR@IT) (V): Not specified
  • Polarity: Not applicable
  • Operating Temperature Maximum Celsius: Not specified
  • Max Clamp Voltage: Not specified
  • On-State Current: Not specified


Product Identification
  • UPC: 78590102594
  • GTIN: 00785901025948