PT2L7LC4 General Purpose Relay DPDT 24VDC

Part Overview

The PT2L7LC4 is a general purpose relay manufactured by TE Connectivity Potter & Brumfield Relays, classified as a DPDT (Double Pole Double Throw, 2 Form C) relay with a 24VDC coil. This relay is designed for DIN rail mounting and is rated for 12A switching capacity at a maximum of 400VAC. The part is currently active in production with 1,146 pieces available in new original stock.

Substitute parts become necessary when inventory constraints occur, when specific mounting or delivery requirements must be met, or when design flexibility allows for functionally equivalent alternatives that meet all electrical and mechanical specifications.

Key Parameters

Parameter	Value
Coil Voltage	24VDC
Contact Form	DPDT (2 Form C)
Contact Rating (Current)	12 A
Switching Voltage (Max)	400VAC
Mounting Type	DIN Rail
Coil Current	30.8 mA
Coil Resistance	777 Ohms
Must Operate Voltage	18 VDC
Must Release Voltage	2.4 VDC
Operating Temperature Range	-40°C ~ 70°C
Contact Material	Silver Nickel (AgNi)
Termination Style	Screw Terminal
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

The PT2L7LC4 has one parametric equivalent substitute: PT2S7LC4. This substitution is valid based on strict electrical and mechanical parameter matching across all critical specifications.

The substitution criteria are based on the following key parameters that must remain identical:

Coil voltage: 24VDC
Contact form: DPDT (2 Form C)
Contact rating: 12 A
Maximum switching voltage: 400VAC
Mounting type: DIN Rail
Coil current: 30.8 mA
Coil resistance: 777 Ohms
Must operate voltage: 18 VDC
Must release voltage: 2.4 VDC
Operating temperature range: -40°C ~ 70°C
Contact material: Silver Nickel (AgNi)
Termination style: Screw Terminal
RoHS compliance: ROHS3 Compliant

Both parts belong to the PT series from TE Connectivity Potter & Brumfield Relays and share identical electrical performance characteristics, allowing direct substitution in applications where the PT2L7LC4 is specified.

Parameter Comparison

Parameter	PT2L7LC4	PT2S7LC4	Match
Manufacturer	TE Connectivity Potter & Brumfield Relays	TE Connectivity Potter & Brumfield Relays	Yes
Series	PT, SCHRACK	PT, SCHRACK	Yes
Coil Voltage	24VDC	24VDC	Yes
Contact Form	DPDT (2 Form C)	DPDT (2 Form C)	Yes
Contact Rating (Current)	12 A	12 A	Yes
Switching Voltage (Max)	400VAC	400VAC	Yes
Mounting Type	DIN Rail	DIN Rail	Yes
Coil Current	30.8 mA	30.8 mA	Yes
Coil Type	Non Latching	Non Latching	Yes
Features	Diode, Lighted Indicator, Mechanical Indicator, Socket Included, Test Button	Diode, Lighted Indicator, Mechanical Indicator, Socket Included, Test Button	Yes
Termination Style	Screw Terminal	Screw Terminal	Yes
Must Operate Voltage	18 VDC	18 VDC	Yes
Must Release Voltage	2.4 VDC	2.4 VDC	Yes
Operate Time	15 ms	15 ms	Yes
Release Time	18 ms	18 ms	Yes
Operating Temperature	-40°C ~ 70°C	-40°C ~ 70°C	Yes
Contact Material	Silver Nickel (AgNi)	Silver Nickel (AgNi)	Yes
Relay Type	General Purpose	General Purpose	Yes
Coil Resistance	777 Ohms	777 Ohms	Yes
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Yes
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	Yes
Product Status	Active	Active	Yes

Engineering Selection Recommendations

Both the PT2L7LC4 and PT2S7LC4 are active production parts from TE Connectivity Potter & Brumfield Relays with identical electrical and mechanical specifications. Selection between these parts should be based on availability and supply chain requirements.

The PT2L7LC4 currently has 1,146 pieces in new original stock, while the PT2S7LC4 has 789 pieces available. Both parts carry ROHS3 compliance and MSL rating of 1 (Unlimited), making them suitable for standard industrial applications without moisture sensitivity constraints.

The difference between these part numbers (L versus S designation) reflects internal TE Connectivity product line differentiation but does not affect functional equivalence. Both parts are suitable for direct substitution in 24VDC DPDT relay applications requiring 12A switching capacity and DIN rail mounting.

Frequently Asked Questions (FAQ)

Q: Can PT2S7LC4 be used as a direct replacement for PT2L7LC4?

A: Yes. The PT2S7LC4 is a parametric equivalent with identical electrical specifications, contact ratings, coil characteristics, and mechanical mounting requirements. Direct substitution is valid for all applications where PT2L7LC4 is specified.

Q: What is the difference between PT2L7LC4 and PT2S7LC4?

A: The L and S designations represent different product line classifications within TE Connectivity's PT series relay portfolio. All measured electrical and mechanical parameters are identical, including coil voltage, contact form, current rating, switching voltage, operating temperature range, and termination style.

Q: Are both parts RoHS compliant?

A: Yes. Both PT2L7LC4 and PT2S7LC4 are ROHS3 compliant and carry an MSL rating of 1 (Unlimited), indicating no moisture sensitivity restrictions for storage or handling.

Q: What is the coil voltage for these relays?

A: Both relays operate on 24VDC coil voltage with a must-operate voltage of 18 VDC and must-release voltage of 2.4 VDC.

Q: What contact configuration do these relays provide?

A: Both relays provide DPDT (Double Pole Double Throw, 2 Form C) contact configuration with a 12A current rating and maximum switching voltage of 400VAC.

Q: What is the mounting method for these relays?

A: Both relays are designed for DIN rail mounting with screw terminal connections.

Q: What is the operating temperature range?

A: Both relays operate across a temperature range of -40°C to 70°C.

Q: What features are included with these relays?

A: Both relays include a diode, lighted indicator, mechanical indicator, socket, and test button.

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