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SIEMENS 3UB81134BB2 Overload Relay

The Siemens (Furnas) 48ATB3S00/3UB81134BB2 is a solid state overload relay engineered for three-phase motor protection. It features a selectable trip class of 5, 10, 20, or 30 via DIP switches, enabling versatile adjustment for various applications. The relay offers a current adjustment range from 0.75 to 3.4 amps with a 4:1 adjustment ratio, ensuring precise control. Its compact, bimetal and solid state designs help prevent nuisance tripping caused by ambient temperature fluctuations, and it includes a visual trip indicator, remote reset capability, and conformally coated circuitry for environmental resilience. UL listed and CSA certified, it ensures safety and compliance for industrial setups, with easy DIN rail mounting and touch-safe terminals for quick installation and maintenance.

Authorized Distributors
Source:DigiKey
Part No:3UB81134BB2
Stock:1
Inv Date:05-29-2026
Price: Unit price: $320.82
Buy/RFQ:
Part No:3UB81134BB2
Stock:0
Inv Date:05-30-2026
Price: Unit price: $320.82
Buy/RFQ:
Part No:3UB81134BB2
Stock:4
Inv Date:05-29-2026
Price: Unit price: $365.67
Buy/RFQ:

SIEMENS 3UB81134BB2 Overload Relay Specifications:

  • Supports trip classes 5, 10, 20, 30 selectable via DIP switches
  • Overload current range: 0.75 to 3.4 amps
  • Adjustment ratio: 4:1 with fine dial in full load amps
  • Field changeable trip class reduces inventory
  • Built-in trip indicator visible for quick diagnostics
  • Ambient temperature range: -25°C to 65°C
  • Certifications: UL listed, CSA certified
  • Conformally coated circuit board for environmental resistance
  • Contact configuration: 1 NO and 1 NC contacts (B600, R300)
  • Remote reset option with 24 V DC applied to terminals
  • DIN rail mounted, touch-safe terminals for installation safety
  • Automatic reset time: approximately 3 minutes after trip
  • Manual reset option available
  • Fiber optically isolated trip mechanism for reliability
  • Suitable for replace thermal overloads, with no heaters required
  • Light, normal, and heavy starting conditions supported

Buy the Siemens 3UB81134BB2 – Reliable Overload Protection for Industrial Applications

Purchase the Siemens overload relay online today to ensure reliable motor protection with adjustable trip settings, environmental resilience, and easy installation. Designed for three-phase systems, it features a compact form factor, visual trip indicator, remote reset, and conformally coated circuitry, making it ideal for industrial automation. Whether you need to replace thermal overloads or enhance system safety, this relay provides precise control, supporting cost-effective and efficient operations. Order now for fast delivery and peace of mind in your electrical system management.

Buy Siemens 3UB81134BB2 overload relay now and experience unmatched reliability and precision in motor protection.

Frequently Asked Questions

Where can I buy SIEMENS 3UB81134BB2?

You can click on the BUY or RFQ button to purchase 3UB81134BB2 from an authorized SIEMENS distributor.

How do I troubleshoot issues or seek technical support for part 3UB81134BB2?

You can download the 3UB81134BB2 datasheet or visit the SIEMENS website for support.

Who is the manufacturer of 3UB81134BB2?

SIEMENS

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