4BT3.9 | Cummins Inc.

generators

4BT3.9 for Commercial Industrial

Frequency

60, 50 Hz

Rated for	kW	kVA
Prime	45 - 59	56 - 74
Standby	50 - 65	62.5 - 81

Certification

EPA Tier 1

Product Availability

Africa Middle East, Asia Pacific, Europe, India, Latin America, North America

Commercial Industrial

Specifications

Cummins® heavy-duty engine - Rugged 4-cycle, industrial diesel delivers reliable power, low emissions and fast response to load changes.
Alternator - Several alternator sizes offer selectable motor starting capability with low reactance 2/3 pitch windings, low waveform distortion with non-linear loads and fault clearing short-circuit capability.
Control system - The PowerCommand® electronic control is standard equipment and provides total genset system integration including automatic remote starting/stopping, precise frequency and voltage regulation, alarm and status message display, AmpSentry™ protection, output metering, auto-shutdown at fault detection and NFPA 110 Level 1 compliance.
Cooling system - Standard integral set-mounted radiator system, designed and tested for rated ambient temperatures, simplifies facility design requirements for rejected heat.
Enclosures - Optional weather protective and sound attenuated enclosures are available.
Fuel tanks - Dual wall sub-base fuel tanks and in-skid day tanks are also offered.
NFPA - The genset accepts full rated load in a single step in accordance with NFPA 110 for Level 1 systems
Warranty

generator model	Spec Sheet	Hz	Prime kW / kVA	Standby kW / kVA	fuel type	Availability	engine model	rating	cert
C50D6	C50D6_EN	60	45 / 56	50 / 63	Diesel				EPA Tier 1
C65D6	C65D6_EN	60	59 / 74	65 / 81	Diesel				EPA Tier 1
C70 D5	C70D5_EN	50	51 / 64	56 / 70	Diesel				EPA Tier 1
C50D6	Spec Sheet	60	45 / 56.25	50 / 62.5	Diesel	Africa Middle East, Asia Pacific, Europe, India, Latin America, North America	4BTAA3.3-G7	Prime, Standby	E.U., mobile application, E.U., stationary application, EPA, nonroad (portable) application, EPA, stationary emergency application, EPA, stationary non-emergency application
C65D6	Spec Sheet	60	59 / 74	65 / 81	Diesel	Africa Middle East, Asia Pacific, Europe, India, Latin America, North America	4BT3.9-G4	Prime, Standby	E.U., mobile application, E.U., stationary application, EPA, nonroad (portable) application, EPA, stationary emergency application, EPA, stationary non-emergency application

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Generator Models

C50D6

Frequency (Hz)

Fuel Type

Diesel

Prime

45 kW

56.25 kVA

Standby

50 kW

62.5 kVA

C65D6

Frequency (Hz)

Fuel Type

Diesel

Prime

59 kW

74 kVA

Standby

65 kW

81 kVA