Catalog 1308242 Issued 3-03 P&B CH series Mid- To Low-Priced CMOS IC Time Delay Relay • Choice of timing modes – Delay on operate – Delay on release – Interval on • Fixed or knob adjustable types • 10A output relay with DPDT contacts • Various models time from 1 to 180 sec. File E22575 File LR15734 Users should thoroughly review the technical data before selecting a product part number. It is recommended that user also seek out the pertinent approvals files of the agencies/laboratories and review them to ensure the product meets the requirements for a given application. Contact Data @ 25°C Timing Modes Arrangements: 2 Form C (DPDT). Delay on operate – Delay period begins when input voltage is applied. At Material: Silver-cadmium oxide alloy. the end of the delay period, the relay will operate and will not release until Rating: 10A @ 30VDC or 277VAC, resistive; 1/2 HP @ 250VAC; 1/3 HP @ input voltage is removed. Reset occurs when input voltage is reapplied. 120VAC. INPUT ON Expected Mechanical Life: 10 million operations. VOLTAGE OFF Expected Electrical Life: 100,000 operations, min., at rated load. N.O. RELAY ON TIME CONTACTS OFF Initial Dielectric Strength Between Open Contacts: 500V rms, 60 Hz. Between All Other Conductors: 500V rms, 60 Hz. Delay on release – Input voltage must be applied continuously to operate the internal relay. When the control switch is closed, the relay energizes. When the control switch is opened, timing begins. When timing is complete, the relay will de-energize. Time may be reset to zero during timing by closing the control switch. Input Data @ 25°C CONTROL ON Voltage: 24 through 240VAC and 24VDC. SWITCH OFF Power Requirement: AC Types: Typically less than 3 VA. N.O. RELAY ON TIME DC Types: Typically less than 3 W. CONTACTS OFF Transient Protection: Yes. Reverse Voltage Protection: Yes. Input Voltages & Limits @ 25°C Voltage Nominal Minimum Maximum Type Voltage Voltage Voltage Interval on – The relay energizes and timing begins when input voltage is applied. At the end of the time delay period the relay will de-energize. Reset is accomplished by removing, then reapplying, the input voltage. AC 24 20 28 120 105 130 INPUT ON 240 210 260 VOLTAGE OFF DC 24 20 32 Note: DC voltage must be filtered (5% p-p ripple max. at nom. voltage). N.O. RELAY ON AC models will operate on 50 or 60 Hz. TIME CONTACTS OFF Environmental Data Timing Specifications Temperature Range: Storage: -55°C to +85°C. Operating: -10°C to +55°C. Timing Ranges: From 1 to 180 sec. Timing Adjustment: Fixed and knob adjustable. Tolerance (for AC units add ±1/2 cycle 60 Hz.): Knob Adj. Types:–0, +20% of max. specified at high end of timing range; Mechanical Data min. specified, or less, at low end. Fixed Types: ±5%. Termination: 8- or 11-pin octal style plug. Res. Adj. Types: ±5% at high end of timing range; min. specified, or less, Enclosure: White plastic case. Knob adjustable types have dial scale for at low end. reference only. Delta Time (for AC units add ±1 cycle 60 Hz.): ±10%. Sockets: Models with 8-pin base fit either 27E122 or 27E891 (snap-on) Repeatability (for AC units add ±1 cycle 60 Hz.): ±2%. screw terminal sockets. 11-pin types fit either 27E123 or Release Time: 125 ms, typ.; 200 ms, max. 27E892 (snap-on) screw terminal sockets. Recycle Time: 125 ms, typ.; 200 ms, max. Weight: 6 oz. (170g) approximately. Dimensions are shown for Dimensions are in inches over Specifications and availability www.tycoelectronics.com reference purposes only. (millimeters) unless otherwise subject to change. Technical support: 1226 specified. Refer to inside back cover. Catalog 1308242 Issued 3-03 P&B Ordering Information – Authorized distributors are more likely to stock boldface items listed below. Delay on Operate Models Delay on Release Models Voltage Time Adjustment Wiring Dia. Part Number Voltage Time Adjustment Wiring Dia. Part Number 24VAC 1 to 10 Sec. Knob 1 CHB-38-30001 24VAC 1 to 10 Sec. Knob 3 CHB-38-30011 1 to 180 Sec. CHB-38-30003 1 to 10 Sec. CHB-38-70011 1 to 10 Sec. CHB-38-70001 120VAC 1 to 60 Sec. Knob 3 CHB-38-70012 120VAC 1 to 60 Sec. Knob 1 CHB-38-70002 1 to 180 Sec. CHB-38-70013 1 to 180 Sec. CHB-38-70003 24VDC 1 to 10 Sec. Knob 3 CHD-38-30011 120VAC 10 Sec. Fixed 1 CHA-38-70001 1 to 180 Sec. CHD-38-30013 240VAC 1 to 10 Sec. Knob 1 CHB-38-80001 Interval on Models 1 to 10 Sec. CHD-38-30001 24VDC 1 to 60 Sec. Knob 1 CHD-38-30002 Voltage Time Adjustment Wiring Dia. Part Number 1 to 180 Sec. CHD-38-30003 1 to 10 Sec. CHB-38-70021 120VAC 1 to 60 Sec. Knob 1 CHB-38-70022 1 to 180 Sec. CHB-38-70023 24VDC 1 to 10 Sec. Knob 1 CHD-38-30021 Outline Dimensions ➛ 2.406 MAX. (61.1) ➛ ➛➛➛2.937 MAX. .56 1.781 MAX. .60 ➛➛➛(14.2) (74.6) (45.2) (15.2) Wiring Diagrams – Bottom Views (pins numbered clockwise from keyway) EXTERNAL RESISTOR EXT SWITCH* ➛➛ ➛➛➛➛ ➛➛ ➛➛➛➛ _ _ + + + INPUT - INPUT (DC POLARITY INDICATED) (DC POLARITY INDICATED) AC INPUT Fig. 1 Fig. 3 Fig. 2 8 Pin 11 Pin 11 Pin * If control switch is closed when power is applied, relay will immediately energize. A 50 millisecond minimum switch closure is required. IMPORTANT: A dry circuit switch is recommended. A “dry circuit” switch is one rated to reliably switch currents of less than 50mA. Use of a switch rated for other than dry circuit may result in failure of the time delay relay to function properly. ** Note: Input polarity for DC operation. For most reliable operation on AC, connect high side to “+” and low side to “–”. Dimensions are shown for Dimensions are in inches over Specifications and availability www.tycoelectronics.com reference purposes only. (millimeters) unless otherwise subject to change. Technical support: 1227 specified. Refer to inside back cover.