© 2016 Littelfuse Protection Relays & Controls

Time Delay Relays

Dedicated - Delay-on-Make

www.littelfuse.com/msm

Rev: 1-A-062216

Specifications

Time Delay

Type

Analog Circuitry

Range

0.05 - 180s fixed

Repeat Accuracy

±5%

Tolerance

(Factory Calibration)

±15%

Recycle Time

≤ 75ms

Time Delay vs Temp.

& Voltage

±15%

Input

Voltage

12 or 24VDC; 24, 120, or 230VAC

Tolerance

±10%

AC Line Frequency

50/60 Hz

Output

Type

Solid State

Form

NO, open during timing

Maximum Load Current

0.5A steady state 25°C;

0.25A steady state 60°C

Minimum Holding Current

40mA

Voltage Drop

≅ 2.5V @ 0.5A

Protection

Circuitry

Encapsulated

Dielectric Breakdown

≥ 2000V RMS input to mounting surface

Insulation Resistance

≥ 100 MΩ

Polarity

DC units are reverse polarity protected

Mechanical

Mounting

A.) PC mount 14 AWG (2.087mm2) wires

(Can be inserted in AMP Miniature Spring

Socket #645980-1)

B.) Stranded 18 AWG wire leads (0.933 mm2)

with mounting bracket

Environmental

Operation/Storage

Temperature

-20° to 60°C / -30° to 85°C

Humidity

95% relative, non-condensing

Weight

P: ≅ 1.1 oz (31.2 g) W: ≅ 1.2 oz (34 g)

MSM SERIES

Function Diagram

DELAY-ON-MAKE (ON-DELAY)

V = Voltage

NO = Normally

Open Contact

NC = Normally

Closed Contact

TD =Time Delay

R = Reset

= Undefined

Time