B4.85 - Square D Thermal Unit Description
B4.85 - Square D Thermal Unit
Looking for dependable motor overload protection? The Schneider Electric B4.85 Thermal Unit delivers responsive thermal overload safeguarding (Class 20) for NEMA Type S motor starters. Engineered with a melting-alloy mechanism, this unit trips precisely during overload events—keeping your motors safe and production flowing smoothly.
Key Features & Benefits
- High-Sensitivity Tripping: Utilizes a precision melting alloy to accurately sense overloads, reducing false trips and protecting motor health.
- Consistent Performance: Designed for reliable, repeatable operation under real-world industrial conditions.
- Easy Plug-and-Play: Streamlined mounting compatibility with standard NEMA Type S motor starters speeds up replacement and maintenance.
- Industrial Durability: Built with quality materials to resist wear in harsh environments like manufacturing plants and process facilities.
Technical Specifications
- Overload Type: Melting alloy
- Class: 20 (fast thermal response)
- Current Range (Full Load Rating): 3.00–3.42 A
- Voltage Rating: 600 VAC
- Mounting: Plug-in for NEMA Type S starters
- Dimensions: 2.4 in × 1.1 in × 0.8 in
- Weight: 0.64 oz (18.14 g)
Material Compliance & Certifications
- Certifications: CE‑certified for global safety and performance standards
- Environmental Compliance: PVC‑free components for reduced environmental impact
- California Proposition 65: Contains lead/lead compounds; standard warning applies
Where It Works Best
Ideal for:
- Heavy-duty manufacturing environments
- Processing plants with frequent load cycling
- Commercial HVAC and pumping systems
- Routine maintenance and equipment upgrades on NEMA Type S starters.
Use of Original Equipment Manufacturer (OEM) trademarks, names, and logos is for informational and identification purposes only. This does not imply any affiliation, sponsorship, endorsement, or approval by the original equipment manufacturer. CIRCUIT BREAKER SUPERSTORE® is an independent reseller and is not an authorized distributor, affiliate, or representative of any manufacturer. Manufacturer warranties do not apply unless expressly stated. All trademarks and registered trademarks are the property of their respective owners.
Square D® is a registered trademark of Schneider Electric. Products sold are surplus, used, or refurbished and are NOT supplied by Schneider Electric or its affiliates.
Specifications
- Width:0.63
- Height:1.88
- Depth:0.38
- Type:B
- Sub-Category:Thermal Unit
- Additional Notes:Square D - Thermal Unit - Also known as a Heater or Heater Element
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You may return unused items within 30 days of delivery for a full refund.
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CIRCUIT BREAKER SUPERSTORE® provides a limited 1-year warranty on both new and reconditioned products. Rest assured, all products are authentic OEM (original equipment manufacturer).