© 2016 Littelfuse Protection Relays & Controls

Time Delay Relays

Dedicated - Interval

www.littelfuse.com/erdi

Rev: 1-A-061016

Specifications

Time Delay

Type

Digital integrated circuitry

Range

0.1s - 500m in 11 adjustable ranges,

0.1s - 1000m fixed

Adjustment

External adjust or onboard

Repeat Accuracy

±0.5%

Tolerance

(Factory Calibration)

≤ ±10%

Reset Time

≤ 150ms

Time Delay vs Temp.

& Voltage

≤ ±2%

Input

Voltage

120VAC or 230VAC

Tolerance

12VDC & 24VDC/AC

-15% - 20%

120VDC/AC & 230VAC

-20% - 10%

AC Line Frequency

50/60 Hz

Output

Type

Isolated relay contacts

Form

DPDT

Rating

10A resistive @ 120/240VAC & 28VDC;

1/3 hp @ 120/240VAC

Life

Mechanical - 1 x 107; Electrical - 1 x 106

Protection

Isolation Voltage

≥ 1500V RMS input to output

Insulation Resistance

≥ 100 MΩ

Polarity

DC units are reverse polarity protected

Mechanical

Mounting

Surface mount with two #6 (M3.5 x 0.6) screws

Dimensions

H 88.9 mm (3.5”); W 63.5 mm (2.5”);

D 43.2 mm (1.7”)

Termination

0.25 in. (6.35 mm) male quick connect terminals

Environmental

Operating/Storage

Temperature

-40° to 65°C / -40° to 85°C

Weight

≅ 5.7 oz (162 g)

Selection Guides

Function Diagrams

INTERVAL (IMPULSE-ON)

V = Voltage

NO = Normally

Open Contact

NC = Normally

Closed Contact

TD =Time Delay

R = Reset

= Undefined

Time

SINGLE SHOT

(PULSE FORMER)

V = Voltage

S1 = Initiate Switch

NO = Normally

Open Contact

NC = Normally

Closed Contact

TD =Time Delay

R = Reset

ERDI SERIES