Documentation & Downloads
Square D B5.50 Thermal Unit Type S & B, Class 20, Melting Alloy, 180 Amps
- MPN: B5.50
- UPC: 785901587415
- PPN: SCH-B5.50
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Description
Linergy NEMA sectional terminal blocks are for terminating wires in a control panel and are designed to NEMA standards. This terminal block has a box lug connector for use with solid or stranded copper wires from #12 through 1/0 AWG. Each box lug terminal is approved for use with various wire combinations. Each lug accepts 1 1/0 AWG, 1 #1 AWG, 1 #2 AWG, 1 or 2 #4 AWG, 1 to 3 #6 AWG, 1 to 5 #8 AWG, 1 to 6 #10 AWG or 1 to 7 #12 AWG wires. The nylon block is molded in the natural color of nylon (off white). This block is UL component recognized for up to 180 Amps and CSA certified for up to 170 Amp. Both UL and CSA have the block rated at up to 600 VAC or VDC.
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.
- 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
- 180A
- Motor Tripping Class
- 20
- Thermal Unit Type
- S, B
- Reach Regulation
- Contains SVHC above threshold
- EU RoHS Directive
- Out of EU RoHS scope
Voltage600V AC/DC
Thermal Overload TypeMelting Alloy
PVC FreeYes
China RoHSOut of China RoHS scope
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
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Looking to buy a large quantity?
To view product inventory
CAD$49.86/ EA
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