9A Relays | McMaster-Carr

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19 Products

DIN-Rail Mount Touch-Safe Screw Terminal Relays

Quickly and safely mount these relays on 35 mm DIN rail (also known as DIN 3). IP20 rated, they have recessed terminals that prevent fingers and other objects from touching live circuits.

4 Circuits Controlled—Relays that control 3 and 4 circuits are built to IEC dimensional standards and are often called IEC contactors.

12 Terminals—Relays with 12 terminals let you attach the control circuit onto the side that works best for your setup, which reduces the amount of wire you need.

						hp @ Switching Voltage
	No. of Terminals	Input Voltage	Control Power	Switching Current @ Voltage (Load Type)	Max. Switching Voltage, V AC	Single Phase	Three Phase	Ht.	Wd.	Dp.		Each
4 Circuits Controlled with 4 Off—4PST-NO



		12	24V AC	6.5 VA	9 amp @ 600V AC (Full) 25 amp @ 600V AC (Resistive)	600	3/4 hp @ 120V AC 2 hp @ 240V AC	3 hp @ 240V AC 5 hp @ 480V AC 7 1/2 hp @ 600V AC	3.2"	1.8"	3.2"	70255K651	000000


		12	120V AC	6.5 VA	9 amp @ 600V AC (Full) 25 amp @ 600V AC (Resistive)	600	3/4 hp @ 120V AC 2 hp @ 240V AC	3 hp @ 240V AC 5 hp @ 480V AC 7 1/2 hp @ 600V AC	3.2"	1.8"	3.2"	70255K652	00000
		12	240V AC	6.5 VA	9 amp @ 600V AC (Full) 25 amp @ 600V AC (Resistive)	600	3/4 hp @ 120V AC 2 hp @ 240V AC	3 hp @ 240V AC 5 hp @ 480V AC 7 1/2 hp @ 600V AC	3.2"	1.8"	3.2"	70255K653	00000
		12	24V DC	5.4 W	9 amp @ 600V AC (Full) 25 amp @ 600V AC (Resistive)	600	3/4 hp @ 120V AC 2 hp @ 240V AC	3 hp @ 240V AC 5 hp @ 480V AC 7 1/2 hp @ 600V AC	3.2"	1.8"	3.9"	70255K28	000000

Accessories and Replacements for Relays

Relay Contacts


Front Mount	Side Mount

Relay contacts allow you to add a signaling device or control another relay. You can add one relay contact to all of these relays. For relays with 12 terminals, you can add two side-mount relay contacts.

No. of Circuits Controlled	For Relay Wd.	Switch Starting Position	Switch Designation	Mounting Location		Each
2	1.8", 2.4"	1 Off and 1 On	DPST-1NO/1NC	Front	70255K14	000000
2	1.8", 2.4"	1 Off and 1 On	DPST-1NO/1NC	Side	70255K26	00000

Contact Blocks

Front

Mount

Contact blocks allow you to add a signaling device or control another relay. You can add one contact block to all of these relays.

No. of Circuits Controlled	For Relay Wd.	Switch Starting Position	Switch Designation	Mounting Location		Each
2	1.8", 2.2", 2.4"	2 Off	DPST-NO	Front	8728N12	000000
2	1.8", 2.2", 2.4"	2 On	DPST-NC	Front	8728N11	00000
4	1.8", 2.2", 2.4"	1 Off and 3 On	4PST-1NO/3NC	Front	8728N15	00000
4	1.8", 2.2", 2.4"	2 Off and 2 On	4PST-2NO/2NC	Front	8728N16	00000
4	1.8", 2.2", 2.4"	3 Off and 1 On	4PST-3NO/1NC	Front	8728N17	00000
4	1.8", 2.2", 2.4"	4 Off	4PST-NO	Front	8728N14	00000
4	1.8", 2.2", 2.4"	4 On	4PST-NC	Front	8728N13	00000

Replacement Relay Coils

Image of Product. Front orientation. Relay Coils. DIN-Rail Mount Touch-Safe Screw Terminal Relays.

Use replacement coils to swap out a broken coil or change the input voltage of a relay. They are only compatible with relays that have 12 terminals. The full load current of the relay must match the full load current range of the coil.

For Switching Current (Load Type)	Input Voltage, V AC	Input Freq., Hz		Each
9 amp to 17 amp (Full)	24	60	8727N11	000000
9 amp to 17 amp (Full)	120	60	8727N12	00000
9 amp to 17 amp (Full)	240	60	8727N13	00000

Safety Relays

Receive signals from safety monitoring relays or controllers to switch devices off and on because of a system failure. Also known as force-guided or mechanically linked contacts, the interlocking opposing contacts on these relays cannot be open or closed at the same time. To keep your system from receiving false switching signals, the interlocking opposing contact must remain open even if a contact welds closed.

IP20 rated, they have recessed terminals that prevent fingers and other objects from touching live circuits. These relays have been tested to safety standards that can help you achieve your system's PL (performance level) and SIL (safety integrity level). Choose a relay with a PL and SIL rating to meet the needs of your system. Higher ratings indicate greater safety protection. As your system becomes more complex, you generally require a higher safety protection level. Mount them to 35mm DIN rail (also known as DIN 3 Rail).

SIL 3, PLe, CAT IV, 600V Max. System Safety Rating—DIN-Rail and Surface Mount

Image of Product. Front orientation. Contains Annotated. Safety Relays. Safety Relays, SIL 3, PLe, CAT IV, 600V Max. System Safety Rating—DIN-Rail and Surface Mount.

Relays that meet SIL 3 are tested for applications with a probability of failure of 0.01% to 0.1% and are used for preventing fires, explosions, or toxic releases.

Relays that meet CAT 4 withstand circuit surges in electrical applications up to 600V.

Mirror Auxiliary Contacts—Relays with mirror auxiliary contacts have contacts that are normally closed and cannot be open at the same time as a normally open main contact.

Nondetachable Auxiliary Contacts—Relays with nondetachable contacts have auxiliary contacts that won’t separate from the relay if there is shock or vibration.

Self-Monitoring Circuitry—When a failure is detected, relays with self-monitoring circuitry signal the controller to remove power and prevent restarting until the issue is resolved.

						hp @ Switching Voltage
	No. of Terminals	Input Voltage	Control Current, mA	Switching Current @ Voltage	Max. Switching Voltage, V AC	Single Phase	Three Phase	Aux. Contact Switch Starting Position	Ht.	Wd.	Dp.	Features		Each
Screw-Terminal Wire Connection







				3 Circuits Controlled with 3 Off—3PST-NO

				18	120V AC	2	9 amp @ 400V AC	600	1/2 hp @ 120V AC 1 1/2 hp @ 240V AC	3 hp @ 240V AC 5 hp @ 480V AC 7 1/2 hp @ 600V AC	2 Off and 3 On	2.7"	1.8"	4.6"	Inspection Window, Interlocked Opposing Contacts, Mirror Auxiliary Contacts, Nondetachable Auxiliary Contacts, Recessed Terminals, Self-Monitoring Circuitry	6242N12	0000000


				18	24V DC	18	9 amp @ 400V AC	600	1/2 hp @ 120V AC 1 1/2 hp @ 240V AC	3 hp @ 240V AC 5 hp @ 480V AC 7 1/2 hp @ 600V AC	2 Off and 3 On	2.7"	1.8"	4.6"	Inspection Window, Interlocked Opposing Contacts, Mirror Auxiliary Contacts, Nondetachable Auxiliary Contacts, Recessed Terminals, Self-Monitoring Circuitry	6242N16	000000

Energy-Saving Motor Starters

Save electricity and extend motor life by reducing the motor's starting current. These starters gradually start and stop motors. Use them on motors where torque varies, such as pumps, compressors, and conveyors. All have an auxiliary contact to send a signal or connect to another device, such as an alarm or indicating light.

			Switching			Time, sec.
	Full Load Current, amp	Input Voltage, V DC	Voltage, V AC	Current, amp	Electrical Phase	Accel.	Deceleration	Ht.	Wd.	Mounting Location	For DIN Rail Ht., mm	Certification		Each
Motor Starters with 1 Auxiliary Contact—1 Off



		9	24	208 to 600	9	Three (2 hp @ 240V AC) Three (5 hp @ 480V AC)	1 to 20	0 to 20	5.5"	1.8"	DIN Rail, Surface	35	UL Listed, C-UL Listed, CE Marked	7112T42	0000000