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{{Use mdy dates|date=November 2020}}
{{
{{Infobox automobile
| name = Proterra Catalyst
| image = [[File:Proterra electric bus leaving Eastgate P&R (22998410693).jpg|250px]]<br>[[File:SAN Airport Inter-Terminal Shuttle Proterra Catalyst BE35 SAN Terminal 2 (52226306222).jpg|250px]]
| image = The Proterra Catalyst at Snoqualmie Pass in Washington .jpg▼
| caption =
| manufacturer = [[Proterra
| aka =
| production = 2014–2020
| assembly =
| predecessor = [[Proterra EcoRide]]
| successor = [[Proterra ZX5]]
| class = [[Transit bus]]
| body_style =
| layout = [[Rear-engine, rear-wheel-drive layout|
| platform =
|
| wheelbase = BE40: {{convert|296.5|in|m|2|abbr=on}}<ref name=Altoona-BE40>{{cite report |url=http://apps.altoonabustest.psu.edu/buses/454 |title=Federal Transit Bus Test: 12 Year/500,000 Mile bus from Proterra, Inc. {{!}} Model BE40 |date=May 2015 |publisher=Pennsylvania Transportation Institute}}</ref><br/>BE35: {{convert|243|in|m|2|abbr=on}}<ref name=Altoona-BE35>{{cite report |url=http://apps.altoonabustest.psu.edu/buses/494 |title=Federal Transit Bus Test, Proterra 35-foot Catalyst FC |publisher=Bus Testing and Research Center |date=June 2018}}</ref>
|
| width = {{convert|102|in|m|2|abbr=on}}<ref name=Altoona-BE40/>
| height = {{convert|134|in|m|2|abbr=on}}<ref name=Altoona-BE40/>
| weight = {{ubl|BE40: {{convert|27370|lb|kg|-2|abbr=on}}<ref
| related =
| designer =
| sp = us
| motor = {{Unbulleted list|[[UQM Technologies]] PP220 (original)<ref name=Altoona-BE40/>|[[UQM Technologies]] SPM250-130-2 (ProDrive)<ref name=Altoona-PD>{{cite report |url=http://apps.altoonabustest.psu.edu/buses/502 |title=Federal Transit Bus Test, Proterra CAT35PD |publisher=Bus Testing and Research Center |date=January 2019}}</ref>|2×[[Parker Hannifin]] GVM310-125 (DuoPower)<ref name=Altoona-DP>{{cite report |url=http://apps.altoonabustest.psu.edu/buses/519 |title=Federal Transit Bus Test, Proterra CAT40DP |publisher=Bus Testing and Research Center |date=September 2020}}</ref>}}
}}
The '''Proterra Catalyst''' is a [[Battery electric bus|battery-electric]] [[Low-floor bus|low-floor]] [[transit bus]] that was built by [[Proterra
== History ==
{{Unreferenced section|date=July 2024}}
In 2014 Proterra introduced the Catalyst, a fast-charge 100% electric bus to replace the EcoRide BE35. The bus was built on the EcoRide's design and engineering and delivered a longer, lighter and more fuel-efficient bus. The second-generation bus measures either {{convert|42|ft|abbr=on||1}} or {{convert|36|feet|abbr=on||1}} and weighs approximately {{convert|27000|lb|kg|abbr=on}}. The bus is built from lightweight, durable carbon composite. The overall lower weight helps reduce wear and tear on streets. It has no tailpipe and runs virtually silent.
== Specifications ==
With the on-route fast charging system, the Catalyst can be operated continuously, 24/7, without the need to head to the depot for lengthy charge times. Catalyst buses equipped with the Fast Charge (FC) battery pack can charge at a rate of up to 500 kW.<ref name=Catalyst-intro>{{cite web |url=http://louisianacleanfuels.org/images/meeting/041416/LAF_Presentations/proterra.pdf |title=Proterra Catalyst Platform Introduction |date=April 14, 2016 |publisher=Louisiana Alternative Fuels Conference & Expo |accessdate=July 13, 2018}}</ref> The company added a {{convert|35|ft|4=1|abbr=on}} model of the Catalyst to its product line in October 2015.
Catalyst is a modular system, offered with two different lengths, two different drivetrains, and seven different batteries, depending on the required passenger capacity, speed (hill performance),<ref>{{cite web |url=https://www.proterra.com/wp-content/uploads/2017/10/DT_PERF_HC-1.pdf |title=Proterra 40 Foot Bus drivetrain performance |author= |date= |publisher=Proterra |accessdate=July 12, 2018}}</ref> and range, respectively.<ref name=ProterraSpecs>{{cite web |url=https://www.proterra.com/products/35-foot-catalyst/ |title=The Proterra Catalyst 35-foot transit vehicle |author= |date= |publisher=Proterra |accessdate=July 12,
{|class="wikitable mw-collapsible collapsed floatright" style="width:
=== Batteries ===▼
▲{|class="wikitable mw-collapsible collapsed floatright" style="width:35em;text-align:center;font-size:80%;"
|+ style="font-size:125%;" | Proterra Catalyst combinations<ref name=ProterraSpecs/>
|-
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|-
! colspan=2 rowspan=2 | Output{{efn|Output depends on battery type.}}
| Peak || Continuous || Peak || Continuous
|-
| {{convert|240|–|510|hp|kW|abbr=on|disp=br}} || {{convert|150|–|257|hp|kW|abbr=on|disp=br}} || {{convert|245|–|295|hp|kW|abbr=on|disp=br}} || {{convert|150|–|181|hp|kW|abbr=on|disp=br}}
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|-
! rowspan=7 | Battery
| rowspan=1 | FC
| {{convert|26.8|–|27.1|mpgus|
|-
| rowspan=1 | FC+
| {{convert|25.8|–|26.1|mpgus|
|-
| rowspan=1 | XR
| {{convert|27.9|–|28.1|mpgus|
|-
| rowspan=1 | XR+
| {{convert|26.8|–|27.1|mpgus|
|-
| rowspan=1 | E2
| {{convert|25.8|–|26.1|mpgus|
|-
| rowspan=1 | E2+{{efn|name=NotOff|This battery not offered for the 35-foot Catalyst}}
| {{convert|25.2|mpgus|
|-
| rowspan=1 | E2 max{{efn|name=NotOff}}
| {{convert|24.3|mpgus|
|-
|colspan=6 |'''Notes'''<br/>{{notelist
|}
Buses equipped with the FC (Fast Charge) family of batteries are intended for [[Downtown circulator|circulator routes]]; XR (eXtended Range) battery buses are intended for intermediate-mileage routes; and E2 (Efficient Energy) battery buses are intended for high-mileage routes.<ref name="E2-battery">{{cite news |url=http://www.greencarcongress.com/2016/09/20160912-proterra.html |title=Proterra launches new Catalyst E2 series electric bus with nominal range of up to 350 miles |date=September 12, 2016 |work=Green Car Congress |accessdate=July 12, 2018}}</ref> The buses were initially offered with lithium-titanate batteries, which Proterra redesignated the TerraVolt FC. FC batteries can be fully recharged in less than ten minutes.<ref name=FC-XR-gcc/>▼
=== Drivetrains ===
At introduction, the Catalyst was equipped with a single electric traction motor, the [[UQM Technologies]] HD220.<ref name=Altoona-BE40/><ref>{{cite press release |url=https://www.uqm.com/English/news/News/press-releases/press-release-details/2015/UQM-Technologies-Receives-New-Orders-for-Proterras-Catalyst-Bus-Program-for-Calendar-Year-2016-Delivery/default.aspx |title=UQM Technologies receives new orders for Proterra's Catalyst bus program for calendar year 2016 delivery |date=November 5, 2015 |publisher=UQM Technologies |accessdate=9 November 2020}}</ref> The HD220 was rated at {{convert|220|kW|hp|abbr=on}} peak power ({{convert|120|kW|hp|abbr=on}} continuous) and {{convert|700|Nm|ftlb|abbr=on}} peak torque ({{convert|350|Nm|ftlb|abbr=on}} continuous); a later revision, designated HD220+, increased continuous power and torque ratings to {{convert|150|kW|hp|abbr=on}} and {{convert|440|Nm|ftlb|abbr=on}}, respectively.<ref name=UQM-motors>{{cite web |url=https://www.uqm.com/English/products/propulsion/commercial-vehicles/transit-buses/default.aspx |title=Transit Buses |publisher=UQM Technologies |accessdate=9 November 2020}}</ref>
The DuoPower drivetrain was introduced in October 2017; it uses two electric traction motors and has a claimed 20% increase in efficiency compared to the original single-motor drivetrain, which was redesignated ProDrive.<ref>{{cite news |url=http://www.greencarcongress.com/2017/10/20171009-proterra.html |title=Proterra introduces two-motor DuoPower drivetrain for its Catalyst electric buses; partnership with Van Hool |date=9 October 2017 |work=Green Car Congress |accessdate=12 July 2018}}</ref> As ProDrive, the Catalyst was equipped with an upgraded UQM HD250 motor,<ref name=Altoona-PD/> which offered increased ratings of {{convert|250|kW|hp|abbr=on}} peak power ({{convert|150|kW|hp|abbr=on}} continuous) and {{convert|900|Nm|ftlb|abbr=on}} peak torque ({{convert|360|Nm|ftlb|abbr=on}} continuous).<ref name=UQM-motors/> The DuoPower traction motors are permanent magnet alternating current motors<ref>{{cite press release |url=https://www.parker.com/portal/site/PARKER/menuitem.31c35c58f54e63cb97b11b10237ad1ca/?vgnextoid=c05969dafb00a610VgnVCM100000e6651dacRCRD |title=Parker Hannifin to showcase its latest mobile system solutions at bauma 2019 |date=April 8, 2019 |publisher=Parker Hannifin |accessdate=9 November 2020}}</ref> manufactured by [[Parker Hannifin]] as part of their Global Vehicle Motor (GVM) series.<ref name=Altoona-DP/><ref>{{cite web |url=https://promo.parker.com/parkerimages/Parker.com/Literature/Electromechanical%20North%20America/CATALOGS-BROCHURES/GVM%20Catalog.pdf |title=Electric and Hybrid Vehicle Accessory, Power Generation & Traction Motor Solutions |date=2014 |publisher=Parker Hannifin |accessdate=9 November 2020}}</ref>
▲=== Batteries ===
▲Buses equipped with the FC (Fast Charge) family of batteries are intended for [[Downtown circulator|circulator routes]]; XR (eXtended Range) battery buses are intended for intermediate-mileage routes; and E2 (Efficient Energy) battery buses are intended for high-mileage routes.<ref name="E2-battery">{{cite news |url=http://www.greencarcongress.com/2016/09/20160912-proterra.html |title=Proterra launches new Catalyst E2 series electric bus with nominal range of up to 350 miles |date=September 12, 2016 |work=Green Car Congress |accessdate=July 12, 2018}}</ref> The buses were initially offered with [[lithium-titanate
The TerraVolt XR [[Lithium nickel manganese cobalt oxides|lithium nickel manganese cobalt oxide]] batteries<ref name="Catalyst-intro" /> were introduced in 2015 with improved range but slower charging, approximately one hour to full charge.<ref name="FC-XR-gcc">{{cite news |url=http://www.greencarcongress.com/2015/02/20150224-proterra.html |title=Proterra introduces new extended range battery pack for electric transit buses; up to 180 miles |date=February 24, 2015 |work=Green Car Congress |accessdate=July 12, 2018}}</ref>
TerraVolt E2 batteries were introduced in 2016 with the longest range and slowest charging.<ref name="E2-battery" /> The E2 battery range features a 3–5 hour charge time.<ref name=E2-battery/><ref>{{cite
Batteries are carried under the Catalyst chassis, and use an interchangeable mounting system, so each Catalyst can hold between four and ten battery packs. The batteries can be swapped out, upgraded, or reconfigured as needs change.<ref name=Catalyst-intro />
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Buses can charge en route, allowing more trips and higher productivity for circulator or loop routes. One common example is to have charging stations at major transit centers. Two examples of this are the [[Williamsburg Bridge Plaza Bus Terminal|Washington Plaza Bus Terminal]] in [[New York City|New York]] and the [[Mill Woods Transit Centre|Mill Woods Transit Center]] in [[Edmonton]].
Charging rates range from 60 to 120 kW (using the [[SAE J1772]] [[Combined Charging System|CCS]] ports) and from 166 to 350 kW (using
== Replacement ==
{{Unreferenced section|date=July 2024}}{{Main|Proterra ZX5}}
On September 15, 2020, Proterra announced the replacement to the Catalyst, the ZX5. The ZX5 40' replaced the BE40 and the ZX5 35' replaced the BE35. [[Edmonton Transit Service]] was the launch customer, ordering 40 ZX5 40' buses.
== Notable operators ==
{| class="wikitable" style="text-align:center;"
!Operator
!Location
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!Model Year(s)
!Quantity
|-
|[[King County Metro]]
|[[Seattle]]
| rowspan="
|2015
|[[King County Metro fleet|3]]
|-
|[[DC Circulator]]
|[[Washington, D.C.]]
| rowspan="3" |2017
|[[DC Circulator#Fleet|14]]
|-
|[[New York City transit buses|NYMTA]]
|[[New York City]]
|[[MTA Regional Bus Operations bus fleet|5]]
|-
|[[SEPTA]]
|[[Philadelphia]]
|[[SEPTA#Buses|25]]
|-
|[[Toronto Transit Commission]]
|[[Toronto, Ontario|Toronto]]
|2019-2020
|[[Toronto Transit Commission bus system#Vehicles|25]]
|-
|[[Chicago Transit Authority]]
|[[Chicago]]
|2020
|[[Chicago Transit Authority#Active bus fleet|25]]
|}
== Gallery ==
<gallery>
File:Rear of Proterra Catalyst.jpg|The rear of the Proterra Catalyst
File:ProTerra.jpg|A Proterra-branded Catalyst testing in [[Minnesota]].▼
▲
File:King County Metro Proterra Catalyst electric bus leaving Eastgate P&R (22997295244).jpg|A Catalyst BE40 of [[King County Metro]]
File:MTA NYC Bus B32 bus turning onto 21st St.jpg|A Catalyst BE40 of the [[New York City transit buses|NYMTA]]
File:DC Circulator 2017 Proterra Catalyst BE40 E2.jpg|A Catalyst BE40 of [[DC Circulator]]
File:Proterra Catalyst 40', VTA 7502 on Route 10 service, Santa Clara Station (44025998571).jpg|A Catalyst BE40 of [[Santa Clara Valley Transportation Authority|Santa Clara VTA]]
File:SEPTA bus 920, September 2019.jpg|A Catalyst BE40 bus of [[SEPTA]]
File:PVTA electric bus charging at Springfield Union Station, August 2018.JPG|A Catalyst BE40 of [[Pioneer Valley Transit Authority]].
File:
File:Proterra Catalyst - Chicago CTA.jpg|A Catalyst BE40 of Chicago CTA
File:King County Metro Proterra Catalyst (24734032269).jpg|Catalyst interior, looking back from forward aisle. Like other partial low-floor buses, there is a step at the rear axle for mechanical clearance.
File:King County Metro Proterra Catalyst (25075462236).jpg|Catalyst driver's seat and farebox
File:KCM 4602 (Proterra) charging at Eastgate P&R (25452679844).jpg|Catalyst instrument panel
File:King County Metro Proterra Catalyst (25075359016).jpg|Additional driver's controls
File:Proterra 20 MTA.jpg|Front interior of Proterra Catalyst (MTA NYCT Spec)
File:Proterra 20 MTA rear.jpg|Rear interior of Proterra Catalyst (MTA NYCT Spec)
File:Proterra_852_PANYNJ.jpg|[[Port Authority of New York and New Jersey]] Proterra Catalyst
</gallery>
== Competition ==
* [[NFI Group|New Flyer]] [[New Flyer Xcelsior#XE Xcelsior CHARGE|XE35 Xcelsior CHARGE]]
* [[NFI Group|New Flyer]] [[New Flyer Xcelsior#XE Xcelsior CHARGE|XE40 Xcelsior CHARGE]]
* [[BYD Auto|BYD]] [[BYD K9|
* [[Nova Bus]] [[Nova Bus LFS|LFSe]] and LFSe+
==References==▼
{{Reflist}}▼
{{commons category}}▼
==External links==
===Test reports===
* {{cite report |url=http://apps.altoonabustest.psu.edu/buses/reports/454.pdf |title=Federal Transit Bus Test, Proterra BE40 |publisher=Bus Testing and Research Center |date=May 2015}}
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* {{cite report |url=http://apps.altoonabustest.psu.edu/buses/reports/502.pdf |title=Federal Transit Bus Test, Proterra CAT35PD |publisher=Bus Testing and Research Center |date=January 2019}}
* {{cite report |url=http://apps.altoonabustest.psu.edu/buses/reports/519.pdf |title=Federal Transit Bus Test, Proterra CAT40DP |publisher=Bus Testing and Research Center |date=September 2020}}
* {{cite report |url=http://apps.altoonabustest.psu.edu/buses/reports/520.pdf |title=Federal Transit Bus Test, Proterra CAT40DP (800V six-pack) |publisher=Bus Testing and Research Center |date=October 2020}}
▲==References==
▲{{Reflist}}
▲{{commons category}}
[[Category:Buses of the United States]]
[[Category:Buses of Canada]]
[[Category:Battery electric buses]]
[[Category:Vehicles introduced in 2014]]
[[Category:Low-floor buses]]
[[Category:Single-deck buses]]
[[Category:Proterra vehicles]]
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