Type 2 Surge Protector 2P 15kA

The Cirprotec CS2P-15/230 surge protection device, reference 77705228, is a Type 2 / Class II transient overvoltage protection device designed to protect low-voltage electrical installations against short-duration voltage spikes. It features 2 poles, a maximum discharge current Imax of 15 kA, and a nominal discharge current In of 5 kA, in a compact 2-module monobloc format for DIN rail mounting.

This protector from Cirprotec’s CS series is intended for electrical panels where it is necessary to limit transient overvoltages that may occur due to switching operations on the network or indirect effects of lightning strikes. Its rated voltage is 230 V AC, it supports a maximum continuous operating voltage Uc of 275 V, and it offers a voltage protection level Up ≤1.2 kV.

Type 2 transient overvoltage protector

The Cirprotec 77705228 is classified as a Type 2 device according to EN 61643-11 and Class II according to IEC 61643-11. This type of protector is typically installed in electrical panels to limit transient overvoltages and divert their energy to earth before they reach downstream connected equipment.

The CS range is designed for protection against induced transient overvoltages and uses a modular format ready for DIN rail mounting.

Imax of 15 kA and In of 5 kA

The CS2P-15/230 reference has a maximum discharge current Imax of 15 kA with an 8/20 µs waveform. The nominal discharge current In is 5 kA, also with an 8/20 µs waveform.

• Maximum discharge current Imax: 15 kA.
• Nominal discharge current In: 5 kA.
• Waveform: 8/20 µs.

These values characterize the device’s ability to conduct transient currents associated with overvoltages under the test conditions defined by the applicable standards.

Protection level Up ≤1.2 kV

The voltage protection level Up specified by Cirprotec is ≤1.2 kV at the nominal discharge current. This parameter indicates the residual voltage level presented by the protector during operation under the established test conditions.

A low Up value helps limit the voltage that can reach electrical and electronic equipment downstream of the protector.

Maximum continuous operating voltage of 275 V

The Cirprotec CS2P-15/230 is designed for a rated voltage of 230 V AC at 50-60 Hz and supports a maximum continuous operating voltage Uc of 275 V AC.

Selecting a protector with the appropriate Uc voltage is essential to avoid unwanted operation during normal mains voltage variations.

2-pole configuration

Reference 77705228 has an internal 2-pole configuration and is intended for applications compatible with TT and TNS networks according to Cirprotec’s catalog. The manufacturer identifies the model as CS2P-15/230.

Installation must be carried out in accordance with the connection diagram specified by Cirprotec and the specific configuration of the electrical network.

2-module DIN monobloc format

The protector uses a monobloc design, so its protection elements form a single unit. It occupies 2 modules on a 35 mm DIN rail, making it easy to integrate into electrical panels with limited space.

This format provides bipolar Type 2 protection without the need for additional independent modules to configure the device.

Short-circuit withstand rating Isccr of 10 kA

Cirprotec specifies a short-circuit withstand rating Isccr of 10 kA for this reference, under the conditions established by the manufacturer.

The device does not include integrated overcurrent protection, so it must be coordinated with the appropriate protection devices in the installation.

Maximum upstream fuse of 63 A gG

The technical documentation specifies a maximum upstream fuse of 63 A type gG. Final coordination of overcurrent protection must be carried out in accordance with the electrical scheme, the expected current, and Cirprotec’s instructions.

Response time ≤25 ns

The response time specified by the manufacturer is ≤25 ns. This fast operation allows the protector to limit very short transient pulses that may appear in an electrical installation.

IP20 protection

The CS2P-15/230 has an IP20 protection rating and is designed to be installed inside electrical panels or suitable enclosures.

The final panel enclosure must provide the necessary level of protection according to the environmental conditions and installation location.

Wide temperature range

The official datasheet specifies an operating temperature range from -40 to +85 °C and a relative humidity range of 5 to 95%.

These characteristics allow integration into a wide variety of electrical panels, provided the installation conditions indicated by Cirprotec are respected.

Durable, self-extinguishing housing

The insulating enclosure is made of PC+GF, glass-fiber-reinforced polycarbonate, and is grey RAL 7035 in color. The material complies with UL94 V-0 flammability classification.

This construction is intended for professional use in distribution and electrical protection panels.

Terminals for conductors up to 35 mm²

The protector accepts different conductor cross-sections depending on the cable type:

• Rigid conductor: 6 to 35 mm².
• Flexible conductor: 6 to 25 mm².
• Tightening torque: 4 Nm.

The effective cable cross-section must be selected according to the installation design, expected currents, and applicable regulations.

Without remote indication contact

Reference 77705228 corresponds to the standard CS2P-15/230 version. Cirprotec separately markets reference 77705229 as the variant with remote indication.

Therefore, reference 77705228 should not be attributed a remote signaling contact unless it is added through another compatible specific solution.

Applications of the Cirprotec CS2P-15/230

• Distribution electrical panels.
• Compatible residential installations.
• Commercial and tertiary buildings.
• Industrial installations.
• Telecommunications.
• Water treatment installations.
• Protection of electrical and electronic equipment against transient overvoltages.
• Installations in TT and TNS networks compatible with the device configuration.

Technical characteristics of the Cirprotec 77705228

• Brand: Cirprotec.
• Reference: 77705228.
• Model: CS2P-15/230.
• Series: CS.
• Type: transient overvoltage protector.
• EN classification: Type 2.
• IEC classification: Class II.
• Number of poles: 2.
• Internal configuration: 2 poles.
• Format: monobloc.
• Number of DIN modules: 2.
• Mounting: 35 mm DIN rail.
• Network configurations indicated in catalog: TT / TNS.
• Rated voltage Un: 230 V AC.
• Frequency: 50-60 Hz.
• Maximum continuous operating voltage Uc: 275 V AC.
• Nominal discharge current In: 5 kA, 8/20 µs waveform.
• Maximum discharge current Imax: 15 kA, 8/20 µs waveform.
• Protection level Up: ≤1.2 kV.
• Response time: ≤25 ns.
• Short-circuit withstand rating Isccr: 10 kA.
• Maximum upstream fuse: 63 A gG.
• Integrated short-circuit protection: no.
• Integrated backup fuse: no.
• Remote indication contact: no.
• Rigid conductor cross-section: 6-35 mm².
• Flexible conductor cross-section: 6-25 mm².
• Tightening torque: 4 Nm.
• Protection rating: IP20.
• Insulating material: PC+GF.
• Flammability rating: UL94 V-0.
• Housing color: grey RAL 7035.
• Operating temperature: -40 to +85 °C.
• Relative humidity: 5-95%.
• Standards: IEC 61643-11 and EN 61643-11.
• EAN: 8435297811244.

Compact Type 2 protection for electrical panels

The Cirprotec CS2P-15/230 combines a maximum discharge current of 15 kA, a nominal current of 5 kA, and a protection level Up ≤1.2 kV in just 2 DIN modules. Its monobloc format makes it easy to integrate into electrical panels where compact protection against transient overvoltages is required.

The Uc voltage of 275 V, response time ≤25 ns, Isccr rating of 10 kA, and wide temperature range complete a solution designed for the protection of compatible residential, tertiary, and industrial installations.

Important: this device protects against transient overvoltages and does not replace the protections against overloads, short circuits, or permanent overvoltages that may be required in the installation. It must be coordinated with the corresponding protection devices and installed following Cirprotec’s instructions and the applicable regulations.