For Wieland SafeRELAY Series Replacement AC/DC 24 V, AC 42-48 V, AC 115-120 V, AC 230 V Supply Voltage SNA4043K-A Safety Relay

group name: Wieland Safety Relay Replacement

Min Order: 1 piece

brand name: DADISICK

model: SafeRELAY series | SNA4043K-A AC/DC 24V (A), SNA4043K-A AC 42-48V (A), SNA4043K-A AC115-120V (A), SNA4043K-A AC 230V (A)

Delivery clauses under the trade mode: CIP

Acceptable payment methods: T/T

update time: Sat, 06 Dec 2025 04:13:17 GMT

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Paramtents

Supply voltage AC/DC 24 V, AC 42-48 V, AC 115-120 V, AC 230 V
Power consumption AC: 2.4 to 2.9 VA, DC: 1.6 W
Outputs 3 N/O, 1 N/O
Response time 350 ms
Mechanical life 10
7 switching cycles Contact material
Ag alloy, gold-plated Ambient temperature

Packging & Delivery

Min Order1 piece

Briefing

DADISICK offers replacement safety relays for SafeRELAY series, AC/DC 24 V, AC 42-48 V, AC 115-120 V, AC 230 V Supply Voltage

Detailed

Technical Data

Dimensions/Wiring Diagram

Downloads

For Wieland SafeRELAY Series Replacement Safety Relay Parameter

Brand	From network	DADISICK
Models	SNA4043K-A AC/DC 24V (A)	LS-3A1B.C
	SNA4043K-A AC 42-48V (A)
	SNA4043K-A AC115-120V (A)
	SNA4043K-A AC 230V (A)
Supply voltage	AC/DC 24 V, AC 42-48 V, AC 115-120 V, AC 230 V	24V DC/AC
Input current	25 mA	≤50mA (24V DC)
Mechanical life	107 switching cycles	More than 10⁷ times
Contact material	Ag alloy, gold-plated	AgSnO2 + 0.2μm Au
Operating temperature	-25 to +65 °C	-20℃~+60℃
Output	3 N/O safe, undelayed, with contact 1 N/O signalling function, undelayed, with contact	3NO + 1NC; 3 (NO) safety output, 1 (NC) auxiliary output

Connection terminal	Screw connection	Screw terminal

Product model display instructions

The brands and specifications shown on this page are for product selection only. Our safety relay is a safety part made by DADISICK, not an official brand of Wieland's products. DAIDSICK offers replacements for official brand products. We are not the owner of the brands. If you need to buy official brand products, please contact the brand's official representative.

Safety Relay Recommendations

LS-3A1B.C is a safety relay suitable for emergency stop, safety door, PNP type safety light curtain signals of various mechanical equipment. lt has 3 normally open (NO) safety output contacts and 1 normally closed (NC) auxiliary output contact and can select single/dual channel operation, manual/automatic reset, and short circuit monitoring between channels. lt adopts the design of components produced in China, has excellent cost performance, and maintains the performance, specifications, quality, etc.

LS-3A1B.C series safety relay

Models：

LS-3A1B.C

Datasheet download

Safety Relay FAQ

Q: If a safety relay disconnects the circuit during use, is it a device failure or a dangerous factor detected?

A: Circuit breakage can be caused by many factors. First, check whether there are any dangerous factors, such as potential circuit accidents. If it is confirmed that there are no hidden dangers, the safety relay may be faulty. At this point, you can try restarting the relay. If the problem persists, you need to troubleshoot or replace the relay.

Q: What should I do if the safety relay output contact fuse?

A: The output contact fuse of safety relay, it is usually caused by a short circuit fault or overcurrent. At this time, the new fuse should be replaced and the circuit should be checked for short circuit or overcurrent problems to avoid similar faults from happening again.

Q: What is the difference between automatic reset and manual reset?

A: Automatic reset means there is no reset switch in the feedback circuit and the device starts automatically when the input is turned on. Manual reset means there is a reset switch in the feedback circuit, and when the input is open, the device will not start unless the reset switch is pressed. Manual reset is basically safer and it must be performed after all hazards have been cleared. Therefore, manual reset is used for machines and emergency stop circuits that personnel can enter, and automatic reset is used for machines that personnel cannot enter.

Q: What is the reason why the safety relay contacts cannot separate?

A: Failure separation of the safety relay contacts can be caused by mechanical bonding, welding, or cold welding. In addition, low contact capacity, heavy load, or changes in load characteristics can also cause failure to connect or disconnect the circuit. At this time, check the contact status and replace or adjust if necessary.

Q: How to adjust the operating parameters of the safety relay?

A: When adjusting the operating parameters of a safety relay, its technical parameters, such as contact thickness, open gap, overtravel and terminal pressure, should be measured first to ensure that all parameters meet the requirements of relevant regulations and working documents. Then, adjust the set value of the action parameter according to actual requirements and fix it with stop paint.

Q: What precautions should be taken when using safety relays in combination with other components?

A: When using safety relays in combination with other components, ensure compatibility and coordination between the components. At the same time, relevant safety regulations and operating procedures should be followed to ensure the safety and stability of the entire circuit system.

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