Product designation			RF420
Product type designation			Motor protection relay
General characteristics
Number of poles		Nr.	3
Overvoltage category			III
Pollution degree			3
Frontal IP degree			IP20
Type of release			Thermal
Protection fuse
	gG (IEC)	A	630
	aM (IEC)	A	500
	K5 (UL)	A	800
Phase failure detection			yes
Reset mode			Manual or automatic
Power circuit characteristics
Rated insulation voltage Ui IEC/EN		V	1000
Rated impulse withstand voltage Uimp		kV	6
Rated operational voltage		V	690
Operational frequency
	min	Hz	50
	max	Hz	60
Operational current Ie
	Operational current min	A	250
	Operational current max	A	420
Tripping class			10A
Test Button			yes
Trip indicator			yes
Terminals
	type		screw and flat washer
	screw		M10
	width	mm	25
	tool		Bar 18mm
Tightening torque for terminals
	min	Nm	35
	max	Nm	35
	min	Ibin	25.9
	max	Ibin	25.9
Auxiliary circuit characteristics
Auxiliary contacts
	NO	Nr.	1
	NC	Nr.	1
Auxiliary Rated insulation voltage Ui IEC/EN		V	690
Auxiliary Rated impulse withstand voltage Uimp		kV	6
Auxiliary Rated operational voltage		V	690
Operating current AC15
	24V	A	3
	120V	A	3
	240V	A	1.5
	380V	A	0.95
	480V	A	0.75
	500V	A	0.72
	600V	A	0.6
Operating current DC13
	125V	A	0.11
	600V	A	0.22
IEC Conventional free air thermal current Ith		A	10
Terminals
	Auxiliary circuit type		screw and washer
	Auxiliary circuit screw		M3,5
	Auxiliary circuit width	mm	8
	Auxiliary circuit tool		Phillips 2
Conductor section
	Auxiliary circuit Flexible w/o lug max	mm²	2.5
	Auxiliary circut Flexible c/w lug max	mm²	2.5
Tightening torque for terminals
	Auxiliary circuit min	Nm	0.8
	Auxiliary circuit max	Nm	1
	Auxiliary circuit min	Ibin	0.59
	Auxiliary circuit max	Ibin	0.74
UL/CSA and IEC/EN 60947-5-1 designation			B600-R300
Ambient conditions
Operating temperature
	min	°C	-25
	max	°C	60
Storage temperature
	min	°C	-50
	max	°C	70
Compensation temperature
	min	°C	-20
	max	°C	60
Max altitude		m	3000
Mechanical features
Operating position
	normal		Vertical plan
	allowable		±30°
Fixing			Screw
Weight		g	2460
UL technical data
Full-load current (FLA) for three-phase AC motor
	at 480V	A	420
	at 600V	A	420
ETIM classification
ETIM 8.0			EC000106 - Thermal overload relay

Documents

03 - Motor protection relays (eng)

Motor starting solutions (eng)
PD116GB02_22

Certifications

cULus
EAC

Conformity

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

Products > Motor protection relays

RF420420

Compare

Motor protection relay, phase failure/single-phase sensitive. Three-pole (three-phase), manual or automatic resetting, 250...420A

Type of product: Thermal overload relays
Operational current [A]: 250...420
Reset mode: Manual or automatic
For contactor series: B
Type: Phase failure / Single-phase sensitive
Type of mounting: Screw

Order code	RF420420
Weight [g]	2685
Qty. per package	1
Multiple qty. of packs per order	1
Package dimensions [mm]	150X152X178
Volume [cm³]	4058.4
Bar code [EAN13]	8013975169445
HS Code	85364900