Product designation				Motor protection circuit breaker
Product type designation				SM3R
Electrical features
Number of poles			Nr.	3
Magnetic protection				yes
Thermal protection				yes
Phase failure detection				yes
Rated insulation voltage Ui IEC/EN			V	1000
Rated impulse withstand voltage Uimp			kV	6
Rated frequency			Hz	50/60
Thermal trip adjustment range				55…75
Rated current (In)			A	75
Magnetic tripping				13 x In
Power dissipation per pole
		max	W	7
Operational short-circuit current breaking capacity (Ics) at AC
		230V	kA	100
		400V	kA	38
		440V	kA	30
		500V	kA	6
		690V	kA	4
Maximum short-circuit current breaking capacity (Icu) at AC
		230V	kA	100
		400V	kA	50
		440V	kA	40
		500V	kA	8
		690V	kA	5
Tripping class				10A
IEC Utilization category				A
Operations
Mechanical life			cycles	50000
Electrical life			cycles	25000
Mechanical features
Tightening torque for terminals
		min	Nm	4.5
		max	Nm	4.5
		min	Ibin	4.4
		max	Ibin	4.4
Max number of wires simultaneously connectable			Nr.	2
Conductor section
	AWG/Kcmil
		min		18
		max		3
	Flexible c/w lug conductor section
		min	mm²	10
		max	mm²	50
	Flexible with insulated spade lug conductor section
		min	mm²	10
		max	mm²	50
Screwdriver				Allen 4mm
Power terminal protection according to IEC/EN 60529				IP20
Cable stripping lenght
		main circuit	mm	1
Ambient conditions
Temperature
	Operating temperature
		min	°C	-20
		max	°C	+70
	Storage temperature
		min	°C	-50
		max	°C	+80
	Compensation temperature
		min	°C	-50
		max	°C	+40
Max altitude			m	3000
Operating position
		normal		Vertical plan
		allowable		Any
Fixing				Screw / DIN rail 35mm
Weight			g	2200
UL technical data
Motor Disconnect
		at 480V	kA	40
		at 600V	kA	10
		protection		Fuse or CB
Group Motor Installation
		at 480V	kA	40
		at 600V	kA	10
		protection		Fuse or CB
Tap Conductor Protection
		at 480Y/277V	kA	40
		at 600Y/347V	kA	10
UL508 / UL 60947-4-1 Manual Self Protected Combination Motor Controller (Type E) Short circuit current
		at 240V	kA	100
		at 480Y/277V	kA	40
Maximum UL/CSA horsepower ratings single-phase
		110V-120V	HP	5
		220V-240V	HP	15
Maximum UL/CSA horsepower ratings three-phase, 3-pole
		200V-208V	HP	20
		220V-240V	HP	25
		440V-480V	HP	50
		550V-600V	HP	60
ETIM classification
ETIM 8.0				EC000074 - Motor protection circuit-breaker

Documents

01 - Motor protection circuit breakers (eng)

FAQ for motor protection circuit breakers SM1…, SM2..., SM3… (eng)
F007IGB01_20

LOVATO Electric - Motor protection circuit breakers SM series
TUTORIAL VIDEO: Tripping protection notification - SM series motor protection circuit breakers
TUTORIAL VIDEO: Door lock handle assembly - SM series motor protection circuit breakers
TUTORIAL VIDEO: Box assembly - SM Series motor protection circuit breakers
TUTORIAL VIDEO: Panel mounting - SM... Motor protection circuit breakers
TUTORIAL VIDEO: Assembly of the accessories - SM series motor protection circuit breakers
TUTORIAL VIDEO: Mounting in modular boxes - SM... Motor protection circuit breakers
TUTORIAL VIDEO: Connection of contactor/circuit breaker - SM Series motor protection circuit breakers

Certifications

cULus
EAC

Conformity

IEC/EN 60947-1
IEC/EN 60947-2
IEC/EN 60947-4-1
UL508
CSA C22.2 n° 14

Products > Motor protection circuit breakers

SM3R7500

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Motor protection circuit breaker, IEC breaking capacity Icu 50kA at 400V, 55...75A

Type of product: Motor protection circuit breaker
Thermal trip adjustment range [A]: 55…75
Rated current In [A]: 75
Short-circuit current breaking capacity (Icu) at AC 400V [kA]: 50
Type of protection: Magnetic and thermal
Type of control: Rotary knob
Certified UL Type E: No

Order code	SM3R7500
Weight [g]	2300
Qty. per package	1
Multiple qty. of packs per order	1
Package dimensions [mm]	172X075X180
Volume [cm³]	2362.5
Bar code [EAN13]	8013975219850
HS Code	85362090