R. STAHL 9276A Series: Loop-Powered Binary Output Ex i Field Circuit Isolators

The R. STAHL 9276A series provides loop-powered binary outputs for Ex i field circuits. These isolators are designed for the operation of intrinsically safe solenoid valves, pilot lights, or horns. They do not require separate auxiliary power, as they are supplied via the control circuit. The intrinsically safe outputs are galvanically separated from the inputs.

Key Features

Extensive catalog for solenoid valves
Space-saving design with a width of 12.5 mm
Usable up to SIL 3 (IEC/EN 61508)

Technical Data

Explosion Protection

Parameter	Value
Applications (zones)	2
Interface Ex zone	0, 1, 2, 20, 21, 22
Homologation IECEX gas	IECEx IBE 17.0045X
IECEx Gas Explosion Protection	Ex ec [ia Ga] IIC T4 Gc
Homologation IECEx dust	IECEx IBE 17.0045X
IECEx Dust Explosion Protection	[Ex ia Da] IIIC
Homologation IECEx firedamp	IECEx IBE 17.0045X
IECEx Firedamp Protection	[Ex ia Ma] I
Homologation ATEX gas	IBEXU 17 ATEX 1153 X
ATEX Gas Explosion Protection	II 3 (1) G Ex ec [ia Ga] IIC T4 Gc
Homologation ATEX dust	IBEXU 17 ATEX 1153 X
ATEX Dust Explosion Protection	II (1) D [Ex ia Da] IIIC
Homologation ATEX firedamp	IBEXU 17 ATEX 1153 X
ATEX Firedamp Protection	I (M1) [Ex ia Ma] I
Homologation cULus	E81680
cULus Identification	Class I, Div. 2, Groups A,B,C,D; Class I, Zone 2, AEx/Ex nA Group IIC; AIS Class I,II,III, Div. 1, Groups A,B,C,D,E,F,G; Class I, Zone 0, [AEx ia]/[Ex ia] IIC; T4 any mounting pos. Ta = 60°C; See Doc. 9276 6 031 001 3
Certifications	ATEX (IBE), Canada (CSA), China (CQM), Korea (KTL), EE.UU. (UL), IECEx (IBE), SIL (exida)
Naval certification	DNV

Safety Data

Parameter	Value
Conformity Certificate	ATEX (EUK), China (CCC)
Maximum voltage U	25.1 V
Maximum current I (Ex ia)	87 mA
Maximum power P	550 mW
Max. permissible external capacitance C for IIC	0.108 μF
Max. permissible external inductance L for IIC	5 mH
Max. permissible external capacitance C for IIB	0.83 μF
Max. permissible external inductance L for IIB	20 mH
Max. permissible external capacitance C for IIA	2.93 μF
Max. permissible external inductance L for IIA	45 mH
Max. permissible external capacitance C for IIIC	0.83 μF
Max. permissible external inductance L for IIIC	20 mH
Max. permissible external capacitance C for I	2.93 μF
Max. permissible external inductance L for I	45 mH
Internal capacitance	Irrelevant
Internal inductance	Irrelevant
Maximum technical safety voltage	253 V AC
Intrinsic safety limits inductance L / capacitance C	Commonly connectable inductance L / capacitance C

Parameter	IIC	IIB	IIA	IIIC
L₀ [mH]	2 mH, 1 mH, 0.500 mH, 1 mH, 10 mH, 5 mH, 20 mH, 5 mH	1 mH, 0.500 mH, 1 mH, 10 mH, 5 mH, 20 mH, 5 mH	1 mH, 0.500 mH, 1 mH, 10 mH, 5 mH, 20 mH, 5 mH	1 mH, 0.500 mH, 1 mH, 10 mH, 5 mH, 20 mH, 5 mH
C₀ [µF]	0.052 μF, 0.065 μF, 0.082 µF, 0.108 μF, 0.380 μF, 0.380 μF, 0.600 μF, 0.610 µF	0.082 µF, 0.108 μF, 0.380 μF, 0.380 μF, 0.600 μF, 0.610 µF	0.100 mH, 0.820 μF, 0.100 mH, 1 μF, 0.100 mH, 0.820 μF, 0.100 mH, 1 μF	0.100 mH, 0.820 μF, 0.100 mH, 1 μF, 0.100 mH, 0.820 μF, 0.100 mH, 1 μF

Functional Safety

Parameter	Value
SIL	3
HFT	0
SFF	100%
Lambda SD	0 FIT
Lambda SU	50 FIT
Lambda DD	0 FIT
Lambda DU	0 FIT

Electrical Data

Parameter	Value
Number of channels	1

Auxiliary Power

Parameter	Value
Auxiliary power	None
Maximum dissipated power	1.06 W
Reverse polarity protection	Yes

Galvanic Separation

Parameter	Value
Test voltage according to standard	EN IEC 60079-11
Galvanic separation output Ex i to input	375 V AC maximum value

Input

Parameter	Value
Input voltage for ON	15 – 30 V
Input voltage for OFF	0 – 5 V

Output

Parameter	Value
Output open-circuit voltage U	21.9 V
Maximum output current I max	40 mA
Output internal resistance R	287 Ω
Switching delay ON/OFF	≤ 20 ms
Switching delay OFF/ON	≤ 20 ms
Output stabilization time	20 ms
Switching status indication	Yellow LED "STAT"

Environmental Conditions

Parameter	Value
Ambient temperature	-40 °C ... 60 °C (-40 °F ... +140 °F)
Storage temperature	-40 °C ... 80 °C (-40 °F ... +176 °F)
Maximum relative humidity	10 ... 95%
Usage at altitude	< 2000 m
Electromagnetic compatibility	EN 61326-1 industrial use; Immunity according to EN 61000-6-2; Radiated spurious emissions according to EN 61000-6-4

Mechanical Data

Parameter	Value
Degree of protection (IP)	IP30
Degree of protection (IP) terminals	IP20
Fire resistance (UL 94)	V0
Enclosure material	Polyamide
Mounting rail dimension	12.5 mm
Width	12.5 mm
Width	12.5 mm
Mounting width in inches	0.49 in
Height	114.5 mm
Height	114.5 mm
Height in inches	4.51 in
Length	112.5 mm
Length in inches	4.43 in
Weight	165 g
Weight	0.36 lb

Mounting / Installation

Parameter	Value
Mounting type	DIN rail NS35/15, NS35/7.5
Mounting position	vertical, horizontal
Connection type	Screw terminal
Minimum rigid conductor cross-section	0.2 mm²
Maximum flexible conductor cross-section	2.5 mm²
Minimum flexible conductor cross-section	0.2 mm²
Maximum flexible conductor cross-section	2.5 mm²
Ambient temperature AWG	24 ... 14

Dimensional Drawing

All dimensions in mm [inches]. Subject to modifications.

ISpac series 9260, 9265, 9270, 9275, 9276, 9282 with screw terminal

R. STAHL reserves the right to modify technical data, dimensions, weights, constructions, and delivery options.

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