Documentation & Downloads
Square D B4.85 Thermal Unit Type S, Class 20, 100 Amps, 600V Max Rating
- MPN: B4.85
- UPC: 785901587408
- PPN: SCH-B4.85
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Description
Linergy NEMA fuse holders are panel mount fuse holders that will accept class H, R, CC, M, and J fuses up to 200 Amps. This three pole fuse holder will accept class R fuses. The rating of the fuse can be up to 100 Amps with a 600 V maximum rating. The box lug connectors will accept 6 to 2/0 AWG (16 to 50 mm2) solid or stranded copper or aluminum wire. Fuse clips are made of one piece aluminum with copper spring that is tin plated. The fuse clips are reinforced for a better connection. The fuse holder base is made of general purpose phenolic. AIC Rating in accordance with UL512 is 20,000 Amp. This fuse holder is UL listed and CSA certified.
Features
- Engineered as a precision-calibrated heating element, this Square D by Schneider Electric B Series thermal unit constantly monitors the current traveling to your motor windings. In the event of a sustained overload or a locked-rotor condition, the excess current generates proportional thermal energy within the element to safely trip the starter, cutting off power before catastrophic winding insulation breakdown or permanent motor damage can occur.
- Utilizing a dependable, high-accuracy melting alloy sensing method, this thermal unit features a durable one-piece construction with a factory-sealed solder reservoir and an internal mechanical ratchet wheel. When current spikes past safe limits, the internal alloy melts at a precise thermal threshold, instantly releasing the ratchet mechanism to open the control circuit contacts—a physics-based approach that completely eliminates the calibration drift common in standard bimetallic alternatives.
- Rated for Motor Tripping Class 20 performance, this standard trip thermal heater is designed to respond dynamically to dangerous overcurrent states by breaking the circuit within 20 seconds or less during a locked-rotor event. This optimal time-delay curve gives your motor enough initial headroom to overcome normal inductive inrush current upon startup while ensuring rapid, destructive-fault mitigation if a mechanical jam or processing overload occurs.
- Fully manufactured to demanding industrial regulatory benchmarks, this authentic Square D component carries extensive UL Listed and CSA approvals for operation up to 600V AC. Its rugged, tamper-resistant construction maintains strict calibration tolerances in heavy industrial environments, providing electrical inspectors, contractors, and plant engineers with certified code compliance and long-term operating peace of mind.
Documentation & Downloads
Specifications
Additional
- Amperage (Thermal Unit)
- 100 A
- AIC Rating
- 20,000 A
- Motor Tripping Class
- 20
- Fuse Holder Poles
- 3
- Range of Product
- B
- Pvc Free
- Yes
- Compliance
- UL Listed, CSA Certified
Voltage (Thermal Unit)600 V Max
Fuse Class CompatibilityH, R, CC, M, J
Thermal Overload TypeMelting alloy
Wire Gauge Range6 to 2/0 AWG (16 to 50 mm²)
MaterialAluminum (clips), Copper (spring), Phenolic (base)
Reach RegulationContains SVHC above threshold
Country of OriginMexico
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CAD
$49.86
/ EA
Available to Order
Lead times may vary. For an accurate estimate please contact us.
Company Stock:
0
Looking to buy a large quantity?
To view product inventory
CAD$49.86/ EA
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