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Pepperl Fuchs

Pepperl Fuchs NBB20-U1-E2

Inductive sensor

MPN: NBB20-U1-E2
Category: Inductive Sensors

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12-month warranty (new) · 3-month (used/refurbished)
30-day returns, no restocking fee on unused parts
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What is the Pepperl Fuchs NBB20-U1-E2?

Sensor head bidirectional and rotatable

20 mm flush

3-wire DC

4 LEDs indicator for 360° visibility

Switching function: Normally open (NO), Output type: PNP, Installation: flush, Output polarity: DC, Output type: 3-wire, Construction type: VariKont ®, Series: VariKont ®, Operating voltage: 10 ... 30 V DC, Type of voltage: DC, Connection type: screw terminals, Housing material: PA/metal with epoxy powder coating, Degree of protection: IP68 / IP69K

Specifications

General specifications

Order code (Pepperl+Fuchs part number)	194771
Switching function	Normally open (NO)
Output type	PNP
Rated operating distance	20 mm sn
Installation	flush
Output polarity	DC
Assured operating distance	0 ... 16.2 mm sa
Reduction factor rAl	0.33
Reduction factor rCu	0.31
Reduction factor r304	0.74
Reduction factor rBrass	0.41
Output type	3-wire
Lifecycle	Active (current Pepperl+Fuchs product)

Nominal ratings

Operating voltage	10 ... 30 V DC UB
Switching frequency	0 ... 440 Hz f
Hysteresis	typ. 5 % H
Reverse polarity protection	reverse polarity protected
Short-circuit protection	pulsing
Voltage drop	≤ 2 V Ud
Operating current	0 ... 200 mA IL
Off-state current	0 ... 0.5 mA typ. 0.01 mA Ir
No-load supply current	≤ 20 mA I0
Time delay before availability	80 ms tv
Operating voltage indicator	LED, green
Switching state indicator	LED, yellow

Functional safety related parameters

MTTFd

1289 a

Safety-relevant product characteristics

MTTFd	1289 a
Mission Time (TM)	20 a
Diagnostic Coverage (DC)	0 %

Compliance with standards and directives

Standard conformity: Standards

EN IEC 60947-5-2

Approvals and certificates

UL approval	cULus Listed Load Type: General Purpose Circuitry: Class 2 Power Source Enclosure Type Rating: Type 1 Supply/Switching Voltage: 30 V DC Output Switching Current: 200 mA
CCC approval	CCC approval / marking not required for products rated ≤36 V
Marine approval	DNVGL TAA0000160

Ambient conditions

Ambient temperature

-25 ... 85 °C (-13 ... 185 °F)

Mechanical specifications

Connection type	screw terminals
Information for connection	A maximum of two conductors with the same core cross section may be mounted on one terminal connection! tightening torque 1.2 Nm + 10 %
Core cross section	up to 2.5 mm2
Minimum core cross-section	without wire end ferrules 0.5 mm2 , with connector sleeves 0.34 mm2
Maximum core cross-section	without wire end ferrules 2.5 mm2 , with connector sleeves 1.5 mm2
Housing material	PA/metal with epoxy powder coating
Sensing face	PA
Housing base	plastic
Degree of protection	IP68 / IP69K
Mass	225 g
Dimensions: Height	40 mm
Dimensions: Width	40 mm
Dimensions: Length	118 mm
Note	Tightening torque: 1.8 Nm (housing)

Downloads & documentation

Official documents from Pepperl Fuchs, downloaded directly from the manufacturer.

Data sheets & manuals

CAD & dimension drawings

Certificates (5)

NBB20-U1-E2: frequently asked questions

When can NBB20-U1-E2 be shipped?

NBB20-U1-E2 is sourced on request — request a quote and we'll confirm the exact availability and shipping timeline for this specific unit.

Can I pick up NBB20-U1-E2 in person?

Local pickup from our Groningen, Netherlands warehouse may be possible — contact us before ordering to check availability and arrange a collection time.

Is express delivery available?

Yes — mention it when you request a quote for NBB20-U1-E2 and we'll include express shipping options in our reply.

My factory is down and I need this urgently — can you help?

For a critical breakdown, contact us directly at +31 (0)50-7110348 or sales@partnerplc.com — we can look into same-day courier or dedicated taxi/hotshot delivery for NBB20-U1-E2, subject to availability and destination.